CCM-12921: permissions declaration

Author: masl2

.github/workflows/pr_destroy_dynamic_env.yaml

@@ -8,6 +8,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: false
 
+permissions:
+  id-token: write
+  contents: read
+
 jobs:
   destroy-dynamic-environment:
     name: Destroy Dynamic Environment