chore: update docker tags formatting

- Change Docker tags configuration to be multiline
- Improve clarity and maintainability of the workflow

This change enhances the readability of the tags in the
Docker workflow, facilitating easier updates and understanding
of the tagging process.

.github/workflows/docker.yml

@@ -50,4 +50,6 @@ jobs:
         with:
           context: .
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ env.LATEST_TAG }},${{ env.VERSION_TAG }}
+          tags: |
+            ${{ env.LATEST_TAG }}
+            ${{ env.VERSION_TAG }}