Add success condition to update-readmes job in workflows

Author: NinePiece2

.github/workflows/build-deploy-site.yml

@@ -23,6 +23,7 @@ concurrency:
 jobs:
   update-readmes:
     runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
     steps:
       - uses: actions/checkout@v5
         with:

.github/workflows/update-leetcode-grid.yml

@@ -14,6 +14,7 @@ on:
 jobs:
   update-readme:
     runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
 
     steps:
       - name: Checkout repository