Set committer and author

Author: anttiharju

.github/actions/publish-docs/action.yml

@@ -8,5 +8,10 @@ runs:
       run: |
         pip install mkdocs
     - shell: sh
+      env:
+        GIT_COMMITTER_NAME: "github-actions[bot]"
+        GIT_COMMITTER_EMAIL: "github-actions[bot]@users.noreply.github.com"
+        GIT_AUTHOR_NAME: "${{ github.actor }}"
+        GIT_AUTHOR_EMAIL: "${{ github.actor }}@users.noreply.github.com"
       run: |
         mkdocs gh-deploy