fix: fix update template workflow

.gitea/workflows/create_update_pr.yml

@@ -24,9 +24,10 @@ jobs:
     
       - name: Perform update
         run: |
+          set -x
           branch="chore/update-template-$(python -m uuid)"
           git checkout -b $branch
-          msg = $(copier update --trust --defaults --conflict inline 2>&1 | sed -n 1p)
+          msg="$(copier update --trust --defaults --conflict inline 2>&1 | sed -n 1p)"
           git add -A
           git diff-index --quiet HEAD || git commit -a -m $msg
           git push -u origin $branch