chore(deps): Bump actions/upload-artifact in /.github/workflows

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 6.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v6)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  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/docs.yml

@@ -59,12 +59,12 @@ jobs:
       run: |
         cargo build --bin pavex --bin pavexc --release
     - name: Store pavex CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavex_cli_linux
         path: target/release/pavex
     - name: Store pavexc CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavexc_cli_linux
         path: target/release/pavexc
@@ -946,12 +946,12 @@ jobs:
       run: |
         cargo build --bin pavex --bin pavexc --release
     - name: Store pavex CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavex_cli_macos
         path: target/release/pavex
     - name: Store pavexc CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavexc_cli_macos
         path: target/release/pavexc
@@ -1259,12 +1259,12 @@ jobs:
       run: |
         cargo build --bin pavex --bin pavexc --release
     - name: Store pavex CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavex_cli_windows
         path: target/release/pavex.exe
     - name: Store pavexc CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pavexc_cli_windows
         path: target/release/pavexc.exe
@@ -1562,7 +1562,7 @@ jobs:
         cd docs/tools/pxh
         cargo build
     - name: Store CLI artifact
-      uses: actions/upload-artifact@v5
+      uses: actions/upload-artifact@v6
       with:
         name: pxh
         path: docs/tools/pxh/target/debug/pxh
@@ -1724,7 +1724,7 @@ jobs:
     - name: Build docs
       run: |
         uv run mkdocs build --strict
-    - uses: actions/upload-artifact@v5
+    - uses: actions/upload-artifact@v6
       with:
         name: docs
         path: site/

.github/workflows/release.yml

@@ -66,7 +66,7 @@ jobs:
         shell: bash
         run: "curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/cargo-dist/releases/download/v0.30.2/cargo-dist-installer.sh | sh"
       - name: Cache dist
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: cargo-dist-cache
           path: ~/.cargo/bin/dist
@@ -82,7 +82,7 @@ jobs:
           cat plan-dist-manifest.json
           echo "manifest=$(jq -c "." plan-dist-manifest.json)" >> "$GITHUB_OUTPUT"
       - name: "Upload dist-manifest.json"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: artifacts-plan-dist-manifest
           path: plan-dist-manifest.json
@@ -158,7 +158,7 @@ jobs:
 
           cp dist-manifest.json "$BUILD_MANIFEST_NAME"
       - name: "Upload artifacts"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: artifacts-build-local-${{ join(matrix.targets, '_') }}
           path: |
@@ -205,7 +205,7 @@ jobs:
 
           cp dist-manifest.json "$BUILD_MANIFEST_NAME"
       - name: "Upload artifacts"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: artifacts-build-global
           path: |
@@ -250,7 +250,7 @@ jobs:
           cat dist-manifest.json
           echo "manifest=$(jq -c "." dist-manifest.json)" >> "$GITHUB_OUTPUT"
       - name: "Upload dist-manifest.json"
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           # Overwrite the previous copy
           name: artifacts-dist-manifest