Added back RELEASE_TOKEN

Author: davidhjp01

.github/workflows/_merge_into_release.yml

@@ -1,6 +1,10 @@
 name: Merge into release
 
-on: workflow_call
+on:
+  workflow_call:
+    secrets:
+      RELEASE_TOKEN:
+        required: true
 
 jobs:
   merge_into_release:
@@ -19,4 +23,4 @@ jobs:
         with:
           type: now
           target_branch: release
-          github_token: ${{ secrets.GITHUB_TOKEN }}
+          github_token: ${{ secrets.RELEASE_TOKEN }}

.github/workflows/publish_release.yml

@@ -49,3 +49,5 @@ jobs:
   #       #   repository-url: https://test.pypi.org/legacy/   # Uncomment this line to publish to testpypi
   merge_into_release:
     uses: ./.github/workflows/_merge_into_release.yml
+    secrets:
+      RELEASE_TOKEN: ${{ secrets.RELEASE_TOKEN }}