Update train_and_release.yml

explicitly grant write access

Author: ahmed-n-abdeltwab

Diff for: .github/workflows/train_and_release.yml

@@ -9,7 +9,8 @@ on:
 jobs:
   train-and-release:
     runs-on: ubuntu-latest
-
+    permissions:
+      contents: write
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v3