CI: Use commit title for the gh-pages commit

.github/workflows/documentation.yml

@@ -27,9 +27,11 @@ jobs:
           set -xe
           CAN_DEPLOY=$(python ../utils/please.py can_i_deploy_documentation)
           DEPLOY_TO=$(python ../utils/please.py where_can_i_deploy_documentation)
+          TITLE=$(echo '${{ github.event.head_commit.message }}' | head -n 1)
 
           echo "can_deploy=$CAN_DEPLOY" >> $GITHUB_OUTPUT
           echo "deploy_to=$DEPLOY_TO" >> $GITHUB_OUTPUT
+          echo "commit_title='$TITLE'" >> $GITHUB_OUTPUT
           echo github.ref ${{ github.ref }}
 
   build-documentation:
@@ -66,6 +68,9 @@ jobs:
           ls -la doc
           pip list
 
+      - name: Get Commit Title
+        run: |
+
       - name: Build docs
         shell: bash
         run: |
@@ -84,4 +89,4 @@ jobs:
         with:
           folder: doc/_site
           branch: ${{ needs.parse_commit_info.outputs.deploy_to }}
-          commit-message: ${{ github.event.head_commit.message }}
+          commit-message: ${{ needs.parse_commit_info.outputs.commit_title }}