ci: split git setup and git commit && push

The git setup is required because github doesn't do it for us. If we could
avoid or skip this we would do it.

The commit and push are now in their own step so that we can debug and
troubleshoot properly.

Author: potyl

.github/workflows/publish.yaml

@@ -71,11 +71,15 @@ jobs:
         run: |
           java -jar openapi-generator-cli.jar generate -c openapitools.json
 
-      - name: Update repository with new version
+      - name: Git Setup
         if: inputs.version == ''
         run: |
           git config --global user.name "github-actions"
           git config --global user.email "[email protected]"
+
+      - name: Update repository with new version
+        if: inputs.version == ''
+        run: |
           git add VERSION openapitools.json $(cat PACKAGE) README.md .openapi-generator/FILES
           git commit -m "Bump version to ${{ env.next_version }}"
           git push