Update actions/upload-artifact action to v4.4.0

Author: renovate[bot]

.github/workflows/flutter.yml

@@ -35,7 +35,7 @@ jobs:
           chromedriver --port=4444 &
           echo CHROMEDRIVER_PORT_4444=yes >$GITHUB_ENV
       - run: ./tool/test.sh --coverage
-      - uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4.3.6
+      - uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
         if: failure()
         with:
           name: failures

.github/workflows/scorecard.yml

@@ -26,7 +26,7 @@ jobs:
           results_file: results.sarif
           results_format: sarif
           publish_results: true
-      - uses: actions/upload-artifact@834a144ee995460fba8ed112a2fc961b36a5ec5a # v4.3.6
+      - uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4.4.0
         with:
           path: results.sarif
       - uses: github/codeql-action/upload-sarif@f0f3afee809481da311ca3a6ff1ff51d81dbeb24 # v3.26.4