Update actions/upload-artifact digest to ff15f03

.gitea/workflows/ci.yml

@@ -32,7 +32,7 @@ jobs:
 
       - name: Upload test reports
         if: always()
-        uses: actions/upload-artifact@c6a366c94c3e0affe28c06c8df20a878f24da3cf # v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: junit-reports
           path: |
@@ -40,7 +40,7 @@ jobs:
           if-no-files-found: ignore
 
       - name: Upload Maven artifacts
-        uses: actions/upload-artifact@c6a366c94c3e0affe28c06c8df20a878f24da3cf # v3
+        uses: actions/upload-artifact@ff15f0306b3f739f7b6fd43fb5d26cd321bd4de5 # v3
         with:
           name: maven-artifacts
           path: |