Set default wf permission to read-all (#2882)

.github/workflows/code_scan.yml

@@ -6,6 +6,9 @@ on:
     # every UTC 6PM from Mon to Fri
     - cron: "0 18 * * 1-5"
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   Trivy-scan:
     runs-on: ubuntu-20.04

.github/workflows/daily.yml

@@ -6,6 +6,9 @@ on:
     # every UTC 7PM from Mon to Fri
     - cron: "0 19 * * 1-5"
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   E2E-tests:
     strategy:

.github/workflows/pre_merge.yml

@@ -12,6 +12,9 @@ on:
       - synchronize
   workflow_dispatch: # run on request (no need for PR)
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   Code-Quality-Checks:
     # This is what will cancel the job concurrency

.github/workflows/publish.yml

@@ -5,6 +5,9 @@ on:
   release:
     types: [published]
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   build_wheels:
     name: Build wheels

.github/workflows/publish_internal.yml

@@ -3,6 +3,9 @@ name: Build and upload to internal PyPI
 on:
   workflow_dispatch: # run on request (no need for PR)
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   build_wheels:
     name: Build wheels

.github/workflows/run_tests_in_tox.yml

@@ -33,6 +33,10 @@ on:
       toxenv-ptver:
         type: string
         default: "pt1"
+
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   run_tests_in_tox:
     # tricky workaround to pass list from the string input type

.github/workflows/stale_marker.yml

@@ -3,6 +3,9 @@ on:
   schedule:
     - cron: "30 1 * * *"
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   stale:
     runs-on: ubuntu-latest

.github/workflows/weekly.yml

@@ -6,6 +6,9 @@ on:
     # every 12AM on Sunday
     - cron: "0 0 * * 0"
 
+# Declare default permissions as read only.
+permissions: read-all
+
 jobs:
   Regression-Tests:
     strategy: