Update git pull command to use GITHUB_REF_NAME

Author: HaiChu20

.github/workflows/cicd.yml

@@ -212,7 +212,7 @@ jobs:
       run: |
         git config user.name "Hai Chu"
         git config user.email "hai.m.chu@tuni.fi"
-        git pull --rebase origin main
+        git pull --rebase origin "$GITHUB_REF_NAME"
 
     - name: Bump patch version
       id: set-version