build(deps): bump actions/checkout from 5 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/audit.yml

@@ -15,7 +15,7 @@ jobs:
     continue-on-error: ${{ matrix.checks == 'advisories' }}
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: EmbarkStudios/cargo-deny-action@v1
       with:
         command: check ${{ matrix.checks }}

.github/workflows/dependabot-merge.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event.pull_request.user.login == 'dependabot[bot]' && github.repository == 'libbpf/libbpf-rs'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: git fetch origin ${{ github.base_ref }} --depth=1
       - name: Check if Cargo.lock was modified
         id: check_cargo_lock

.github/workflows/publish.yml

@@ -10,7 +10,7 @@ jobs:
     outputs:
       version: ${{ steps.version.outputs.version }}
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - id: version
       shell: bash
       run: |
@@ -31,7 +31,7 @@ jobs:
     needs: [test, version]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@stable
     - name: Dry-run package creation
       # Can't verify libbpf-cargo for it may depend on yet-to-be-published libbpf-rs.

.github/workflows/test.yml

@@ -45,7 +45,7 @@ jobs:
         tc_var RUSTFLAGS
         tc_var CFLAGS
         tc_var CXXFLAGS
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: ${{ matrix.rust }}
@@ -69,7 +69,7 @@ jobs:
     name: Run chosen examples
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update
@@ -102,7 +102,7 @@ jobs:
           #       libbpf and ubuntu 22.04 only has 0.5 (..?)
           #- args: "default-features = false"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update
@@ -128,7 +128,7 @@ jobs:
     name: Build using minimum versions of dependencies
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update
@@ -152,7 +152,7 @@ jobs:
     name: Build capable example with static libelf and libz
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update
@@ -169,7 +169,7 @@ jobs:
     name: Build for aarch64
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Add apt sources for arm64
         run: |
           dpkg --add-architecture arm64
@@ -197,7 +197,7 @@ jobs:
     name: Build for aarch32
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Add apt sources for armhf
         run: |
           dpkg --add-architecture armhf
@@ -225,7 +225,7 @@ jobs:
     name: Lint with clippy
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update
@@ -245,7 +245,7 @@ jobs:
     name: Lint .bpf.c files
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: find . -iname '*.bpf.c' > bpf.c.files
       - name: Linter action test
         uses: d-e-s-o/[email protected]
@@ -256,7 +256,7 @@ jobs:
     name: Check BPF C code formatting
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
@@ -269,7 +269,7 @@ jobs:
     name: Check Rust code formatting
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@nightly
         with:
           components: rustfmt
@@ -281,7 +281,7 @@ jobs:
     env:
       RUSTDOCFLAGS: '-D warnings'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install deps
         run: |
           sudo apt-get update