ci: add write permissions to content and id token

Author: aminya

.github/workflows/CI.yml

@@ -90,6 +90,9 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     needs: build
+    permissions:
+      contents: write
+      id-token: write
     steps:
       - name: Merge Artifacts
         uses: actions/upload-artifact/merge@v4