ci: detect if bump is needed

Author: jsleroy

.github/workflows/test.yml

@@ -49,9 +49,21 @@ jobs:
         run: |
           pip install .
 
-      - name: Generate release
+      - name: Check if bump is needed
+        id: bump_check
+        run: |
+          if cz bump --dry-run; then
+            echo "bump_needed=true" >> $GITHUB_ENV
+            echo "bump_needed=true" >> $GITHUB_OUTPUT
+          else
+            echo "bump_needed=false" >> $GITHUB_ENV
+            echo "bump_needed=false" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Bump version and push tag
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        if: env.bump_needed == 'true'
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
@@ -60,10 +72,9 @@ jobs:
           git push --tags
 
   release:
-    name: Create GitHub Release
     runs-on: ubuntu-latest
     needs: bump
-    if: github.ref_type == 'tag'
+    if: needs.bump_check.outputs.bump_needed == 'true' && github.ref_type == 'tag'
     steps:
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2