ci: Allow "Build Release" workflow to write content (releases)

https://docs.github.com/en/actions/security-guides/automatic-token-authentication#permissions-for-the-github_token

Author: joschi

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
     name: Build Release
     runs-on: ubuntu-latest
     permissions:
-      contents: read
+      contents: write
       packages: write
     steps:
       - uses: actions/checkout@v3