Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build-pipeline.yml

@@ -54,7 +54,7 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
       - name: Download dist artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: plugin-dist
           path: dist/
@@ -84,7 +84,7 @@ jobs:
       # checkout necessary to ensure the uploaded report contains the correct paths
       - uses: actions/checkout@v5
       - name: Retrieve coverage reports
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           pattern: coverage-*
           path: ./reports/

.github/workflows/release.yml

@@ -51,7 +51,7 @@ jobs:
       discussions: write
     steps:
     - name: Download dist artifacts
-      uses: actions/download-artifact@v5
+      uses: actions/download-artifact@v6
       with:
         name: plugin-dist
         path: dist/