Set write permissions for release workflow

Added `contents: write` permissions to ensure the GitHub Actions workflow has the necessary access rights to create or modify repository contents during the release process. This change is required for the workflow to execute successfully.

.github/workflows/release.yml

@@ -7,6 +7,9 @@ on:
 env:
   BOX_VERSION: '4.6.2'
 
+permissions:
+  contents: write
+
 jobs:
   build:
     runs-on: 'ubuntu-latest'