chore(deps): bump actions/upload-artifact digest to b4b15b8

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/package.yml

@@ -24,7 +24,7 @@ jobs:
           tools: 'krankerl'
       - name: Package app
         run: krankerl package
-      - uses: actions/upload-artifact@50769540e7f4bd5e21e526ee35c689e35e0d6874 # v4
+      - uses: actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882 # v4
         with:
           path: build/artifacts/mail.tar.gz
           if-no-files-found: error