chore(deps): bump actions/upload-artifact from 5 to 6

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

Author: dependabot[bot]

.github/workflows/test.yml

@@ -44,7 +44,7 @@ jobs:
         run: just test extension coverage "${{ matrix.shardIndex }}/${{ matrix.shardTotal }}"
 
       - name: Upload coverage artifact
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-${{ matrix.shardIndex }}
           path: src/extension/coverage/
@@ -85,7 +85,7 @@ jobs:
           nyc report --reporter=lcov --reporter=text --temp-dir=merged-coverage --report-dir=coverage-report
 
       - name: Upload merged coverage report
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: coverage-report
           path: coverage-report/
@@ -114,15 +114,15 @@ jobs:
 
       - name: Upload blob report
         if: always()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: blob-report-${{ matrix.shardIndex }}
           path: src/view/blob-report/
           retention-days: 1
 
       - name: Upload test traces
         if: failure()
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: playwright-traces-${{ matrix.shardIndex }}
           path: src/view/test-results/
@@ -156,7 +156,7 @@ jobs:
           pnpm exec playwright merge-reports --reporter=html ../../all-blob-reports
 
       - name: Upload merged HTML report
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: playwright-report
           path: src/view/playwright-report/