chore: support custom RELEASE_TOKEN in release workflow

Author: ClaudiaFang

.github/workflows/semantic-release.yml

@@ -52,5 +52,5 @@ jobs:
       - run: npm ci
       - run: npm run build
       - env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN || secrets.GITHUB_TOKEN }}
         run: npx semantic-release