specify bash

Author: Tompage1994

.github/workflows/release_auto.yml

@@ -23,11 +23,13 @@ jobs:
 
       - name: calculate bump level
         id: bump_level
+        shell: bash
         run: |
           grep -RE '(major_changes|breaking_changes)' changelogs/fragments
           MAJOR=$?
           grep -R minor_changes changelogs/fragments
           MINOR=$?
+
           if [ $MAJOR -eq 0 ]; then
             echo "level=major" >> "$GITHUB_OUTPUT"
             echo "Determined change level: major"