Set read-all permisions in github workflows.

Author: popovaan

.github/workflows/bandit.yml

@@ -20,6 +20,8 @@ on:
   schedule:
     - cron: '31 21 * * 6'
 
+permissions: read-all
+
 jobs:
   bandit:
     permissions:

.github/workflows/precommit.yml

@@ -1,6 +1,8 @@
 name: Precommit
 on: [push, pull_request]
 
+permissions: read-all
+
 jobs:
   Run_UT:
     runs-on: ubuntu-20.04