[3.13] Default GHA permissions to contents: read (GH-148346) (#148387)

(cherry picked from commit 9c9df8a)

Author: hugovk

.github/workflows/add-issue-header.yml

@@ -12,7 +12,8 @@ on:
       # Only ever run once
       - opened
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   add-header:

.github/workflows/build.yml

@@ -11,7 +11,8 @@ on:
     - 'main'
     - '3.*'
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   # https://docs.github.com/en/actions/writing-workflows/workflow-syntax-for-github-actions#concurrency
@@ -540,6 +541,7 @@ jobs:
       needs.build-context.outputs.run-ci-fuzz == 'true'
       || needs.build-context.outputs.run-ci-fuzz-stdlib == 'true'
     permissions:
+      contents: read
       security-events: write
     strategy:
       fail-fast: false

.github/workflows/jit.yml

@@ -18,7 +18,8 @@ on:
       - '!**/*.ini'
   workflow_dispatch:
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}

.github/workflows/lint.yml

@@ -2,7 +2,8 @@ name: Lint
 
 on: [push, pull_request, workflow_dispatch]
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   FORCE_COLOR: 1

.github/workflows/mypy.yml

@@ -30,7 +30,8 @@ on:
       - "Tools/requirements-dev.txt"
   workflow_dispatch:
 
-permissions: {}
+permissions:
+  contents: read
 
 env:
   PIP_DISABLE_PIP_VERSION_CHECK: 1

.github/workflows/new-bugs-announce-notifier.yml

@@ -5,7 +5,8 @@ on:
     types:
       - opened
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   notify-new-bugs-announce:

.github/workflows/require-pr-label.yml

@@ -4,7 +4,8 @@ on:
   pull_request:
     types: [opened, reopened, labeled, unlabeled, synchronize]
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   label:

.github/workflows/reusable-cifuzz.yml

@@ -13,7 +13,8 @@ on:
         required: true
         type: string
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   cifuzz:

.github/workflows/reusable-context.yml

@@ -48,7 +48,8 @@ on:  # yamllint disable-line rule:truthy
         description: Whether to run the Windows tests
         value: ${{ jobs.compute-changes.outputs.run-windows-tests }}  # bool
 
-permissions: {}
+permissions:
+  contents: read
 
 jobs:
   compute-changes:

.github/workflows/reusable-docs.yml

@@ -4,7 +4,8 @@ on:
   workflow_call:
   workflow_dispatch:
 
-permissions: {}
+permissions:
+  contents: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}