Add explicit permissions block to integration-tests-benchmarks.yml

Author: BYK

.github/workflows/integration-tests-benchmarks.yml

@@ -15,6 +15,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   test:
     name: Benchmarks