ci(github-action)!: Update actions/upload-artifact action (v4 → v6)

| datasource  | package                 | from | to |
| ----------- | ----------------------- | ---- | -- |
| github-tags | actions/upload-artifact | v4   | v6 |

Author: erhardt-consulting-bot

.github/workflows/build-container.yml

@@ -73,7 +73,7 @@ jobs:
 
       # Upload container
       - name: Upload container
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
         with:
           name: relational-databases-${{ env.TAG }}-${{ env.PLATFORM }}
           path: /tmp/relational-databases-${{ env.TAG }}-${{ env.PLATFORM }}.tar