Fix the release workflow references to scripts (#4034)

Author: sandhose

.github/workflows/merge-back.yaml

@@ -31,5 +31,5 @@ jobs:
         with:
           github-token: ${{ secrets.BOT_GITHUB_TOKEN }}
           script: |
-            const script = require('./.github/scripts/merge-back.js');
+            const script = require('./.github/scripts/merge-back.cjs');
             await script({ core, github, context });

.github/workflows/release-branch.yaml

@@ -103,5 +103,5 @@ jobs:
         with:
           github-token: ${{ secrets.BOT_GITHUB_TOKEN }}
           script: |
-            const script = require('./.github/scripts/create-release-branch.js');
+            const script = require('./.github/scripts/create-release-branch.cjs');
             await script({ core, github, context });