diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index af1217b31fa..b0bf3ea4bab 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - run: python -m pip install --upgrade pip && pip install nox
       - uses: dtolnay/rust-toolchain@stable
         with:
@@ -41,11 +41,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - name: resolve MSRV
         id: resolve-msrv
-        run:
-          echo MSRV=`python -c 'import tomllib; print(tomllib.load(open("Cargo.toml", "rb"))["package"]["rust-version"])'` >> $GITHUB_OUTPUT
+        run: echo MSRV=`python -c 'import tomllib; print(tomllib.load(open("Cargo.toml", "rb"))["package"]["rust-version"])'` >> $GITHUB_OUTPUT
 
   semver-checks:
     if: github.ref != 'refs/heads/main'
@@ -55,7 +54,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: obi1kenobi/cargo-semver-checks-action@v2
 
   check-msrv:
@@ -69,7 +68,7 @@ jobs:
           components: rust-src
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -91,43 +90,44 @@ jobs:
       fail-fast: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-no-fail-fast') }}
       matrix:
         rust: [stable]
-        platform: [
-          {
-            os: "macos-latest",
-            python-architecture: "arm64",
-            rust-target: "aarch64-apple-darwin",
-          },
-          {
-            os: "ubuntu-latest",
-            python-architecture: "x64",
-            rust-target: "x86_64-unknown-linux-gnu",
-          },
-          {
-            os: "ubuntu-latest",
-            python-architecture: "x64",
-            rust-target: "powerpc64le-unknown-linux-gnu",
-          },
-          {
-            os: "ubuntu-latest",
-            python-architecture: "x64",
-            rust-target: "s390x-unknown-linux-gnu",
-          },
-          {
-            os: "ubuntu-latest",
-            python-architecture: "x64",
-            rust-target: "wasm32-wasi",
-          },
-          {
-            os: "windows-latest",
-            python-architecture: "x64",
-            rust-target: "x86_64-pc-windows-msvc",
-          },
-          {
-            os: "windows-latest",
-            python-architecture: "x86",
-            rust-target: "i686-pc-windows-msvc",
-          },
-        ]
+        platform:
+          [
+            {
+              os: "macos-latest",
+              python-architecture: "arm64",
+              rust-target: "aarch64-apple-darwin",
+            },
+            {
+              os: "ubuntu-latest",
+              python-architecture: "x64",
+              rust-target: "x86_64-unknown-linux-gnu",
+            },
+            {
+              os: "ubuntu-latest",
+              python-architecture: "x64",
+              rust-target: "powerpc64le-unknown-linux-gnu",
+            },
+            {
+              os: "ubuntu-latest",
+              python-architecture: "x64",
+              rust-target: "s390x-unknown-linux-gnu",
+            },
+            {
+              os: "ubuntu-latest",
+              python-architecture: "x64",
+              rust-target: "wasm32-wasi",
+            },
+            {
+              os: "windows-latest",
+              python-architecture: "x64",
+              rust-target: "x86_64-pc-windows-msvc",
+            },
+            {
+              os: "windows-latest",
+              python-architecture: "x86",
+              rust-target: "i686-pc-windows-msvc",
+            },
+          ]
         include:
           # Run beta clippy as a way to detect any incoming lints which may affect downstream users
           - rust: beta
@@ -148,7 +148,7 @@ jobs:
           components: clippy,rust-src
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
           architecture: ${{ matrix.platform.python-architecture }}
       - uses: Swatinem/rust-cache@v2
         with:
@@ -177,15 +177,14 @@ jobs:
       matrix:
         rust: [stable]
         python-version: ["3.12"]
-        platform:
-          [
+        platform: [
             {
-              os: "macos-latest",  # first available arm macos runner
+              os: "macos-latest", # first available arm macos runner
               python-architecture: "arm64",
               rust-target: "aarch64-apple-darwin",
             },
             {
-              os: "macos-13",  # last available x86_64 macos runner
+              os: "macos-13", # last available x86_64 macos runner
               python-architecture: "x64",
               rust-target: "x86_64-apple-darwin",
             },
@@ -234,18 +233,19 @@ jobs:
       fail-fast: ${{ !contains(github.event.pull_request.labels.*.name, 'CI-no-fail-fast') }}
       matrix:
         rust: [stable]
-        python-version: [
-          "3.7",
-          "3.8",
-          "3.9",
-          "3.10",
-          "3.11",
-          "3.12",
-          "3.13",
-          "pypy3.9",
-          "pypy3.10",
-          "graalpy24.0",
-        ]
+        python-version:
+          [
+            "3.7",
+            "3.8",
+            "3.9",
+            "3.10",
+            "3.11",
+            "3.12",
+            "3.13",
+            "pypy3.9",
+            "pypy3.10",
+            "graalpy24.0",
+          ]
         platform:
           [
             {
@@ -389,7 +389,7 @@ jobs:
         with:
           # FIXME valgrind detects an issue with Python 3.12.5, needs investigation
           # whether it's a PyO3 issue or upstream CPython.
-          python-version: '3.12.4'
+          python-version: "3.12.4"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -410,7 +410,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -432,7 +432,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -442,7 +442,7 @@ jobs:
       - run: cargo rustdoc --lib --no-default-features --features full -Zunstable-options --config "build.rustdocflags=[\"--cfg\", \"docsrs\"]"
 
   coverage:
-    if : ${{ github.event_name != 'merge_group' }}
+    if: ${{ github.event_name != 'merge_group' }}
     needs: [fmt]
     name: coverage ${{ matrix.os }}
     strategy:
@@ -453,7 +453,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -464,9 +464,9 @@ jobs:
         uses: taiki-e/install-action@cargo-llvm-cov
       - run: python -m pip install --upgrade pip && pip install nox
       - run: nox -s coverage
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
-          file: coverage.json
+          files: coverage.json
           name: ${{ matrix.os }}
           token: ${{ secrets.CODECOV_TOKEN }}
 
@@ -552,11 +552,11 @@ jobs:
 
   test-free-threaded:
     needs: [fmt]
-    name: Free threaded tests - ${{ matrix.runner }}
-    runs-on: ${{ matrix.runner }}
+    name: Free threaded tests - ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        runner: ["ubuntu-latest", "macos-latest", "windows-latest"]
+        os: ["ubuntu-latest", "macos-latest", "windows-latest"]
     steps:
       - uses: actions/checkout@v4
       - uses: Swatinem/rust-cache@v2
@@ -568,7 +568,7 @@ jobs:
       # TODO: replace with actions/setup-python when there is support
       - uses: quansight-labs/setup-python@v5.3.1
         with:
-          python-version: '3.13t'
+          python-version: "3.13t"
       - name: Install cargo-llvm-cov
         uses: taiki-e/install-action@cargo-llvm-cov
       - run: python3 -m sysconfig
@@ -582,10 +582,10 @@ jobs:
       - name: Generate coverage report
         run: nox -s generate-coverage-report
       - name: Upload coverage report
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
-          file: coverage.json
-          name: test-free-threaded
+          files: coverage.json
+          name: ${{ matrix.os }}-test-free-threaded
           token: ${{ secrets.CODECOV_TOKEN }}
 
   test-version-limits:
@@ -596,7 +596,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -620,7 +620,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
           save-if: ${{ github.event_name != 'merge_group' }}
@@ -659,7 +659,7 @@ jobs:
             flags: "-i python3.12 --features abi3 --features generate-import-lib"
             manylinux: off
           # macos x86_64 -> aarch64
-          - os: "macos-13"  # last x86_64 macos runners
+          - os: "macos-13" # last x86_64 macos runners
             target: "aarch64-apple-darwin"
           # macos aarch64 -> x86_64
           - os: "macos-latest"
@@ -668,11 +668,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
-          workspaces:
-            examples/maturin-starter
+          workspaces: examples/maturin-starter
           save-if: ${{ github.event_name != 'merge_group' }}
           key: ${{ matrix.target }}
       - name: Setup cross-compiler
@@ -692,11 +691,10 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: "3.12"
       - uses: Swatinem/rust-cache@v2
         with:
-          workspaces:
-            examples/maturin-starter
+          workspaces: examples/maturin-starter
           save-if: ${{ github.event_name != 'merge_group' }}
       - uses: actions/cache/restore@v4
         with: