chore: GitHub Actions build-test.yml main 브랜치 PR은 develop 브랜치만 가능

Author: devwqc

.github/workflows/build-test.yml

@@ -9,6 +9,12 @@ jobs:
   build-test:
     runs-on: ubuntu-latest
     steps:
+      - name: Check source branch for main PR
+      if: github.base_ref == 'main' && github.head_ref != 'develop'
+      run: |
+        echo "PRs to main branch are only allowed from develop branch"
+        exit 1
+
       - name: Checkout your repository using git
         uses: actions/checkout@v4
       - name: Install, build, and upload your site