Merge pull request #155 from AkihiroSuda/ci

CI: temporarily disable release check for PRs

Author: AkihiroSuda

.github/workflows/release.yaml

@@ -9,9 +9,6 @@ on:
       - 'master'
     tags:
       - 'v*'
-  pull_request:
-    branches:
-      - 'master'
   schedule:
     - cron: '0 0 * * *'  # Runs every night at midnight UTC
 permissions: