Adding explicit permissions for workflow

Author: dtaivpp

.github/workflows/workflow.yml

@@ -1,6 +1,10 @@
 ---
 name: Vulcanizer CI
 on: [push, pull_request]
+permissions: 
+  contents: read
+  actions: read
+  checks: write
 jobs:
   build:
     runs-on: ubuntu-latest