rename secret names

Author: gfx

.github/workflows/update-sqldef-version.yaml

@@ -24,8 +24,8 @@ jobs:
         id: app-token
         uses: actions/create-github-app-token@v2
         with:
-          app-id: ${{ secrets.GITHUB_APP_ID }}
-          private-key: ${{ secrets.GITHUB_APP_PRIVATE_KEY }}
+          app-id: ${{ secrets.GH_APP_ID }}
+          private-key: ${{ secrets.GH_APP_PRIVATE_KEY }}
           permission-contents: write
           permission-pull-requests: write