ci: Allow no conda-lock updates

.github/workflows/wave.yml

@@ -69,6 +69,7 @@ jobs:
         shell: bash -l {0}
 
       - name: Commit & push changes
+        id: commit-and-push
         run: |
           git config user.email "[email protected]"
           git config user.name "nf-core-bot"
@@ -78,4 +79,9 @@ jobs:
           git commit -m "[automated] autogenerated conda-lock file"
           git push
 
+      - name: If no conda-lock update
+        if: steps.commit-and-push.outcome == 'failure'
+        run: |
+          echo "No conda-lock update"
+
         # TODO Build containers with Wave