Grant write permission for packages (#6)

ref: https://goreleaser.com/ci/actions/#workflow

Author: utam0k

.github/workflows/release.yaml

@@ -10,6 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       contents: write
+      packages: write
     steps:
     - name: Check out
       uses: actions/checkout@v4