release-tracker.yml: drop permissions block

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

.github/workflows/release-tracker.yml

@@ -13,8 +13,6 @@ jobs:
   build:
     if: github.event.pull_request.merged == true
     runs-on: ubuntu-24.04
-    permissions:
-      contents: write
 
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1