Reduce permision for release gha (#318)

Signed-off-by: Jian Qiu <jqiu@redhat.com>

.github/workflows/release.yml

@@ -1,5 +1,8 @@
 name: GoRelease
 
+permissions:
+  contents: read
+
 on:
   pull_request:
     paths:
@@ -38,6 +41,8 @@ jobs:
     name: release
     runs-on: ubuntu-latest
     needs: [ env ]
+    permissions:
+      contents: write
     steps:
       - name: checkout code
         uses: actions/checkout@v3