ci: set contents read as default workflow permissions

Author: crazy-max

.github/workflows/ci.yml

@@ -4,6 +4,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read
+
 on:
   schedule:
     - cron: '0 10 * * *'
@@ -16,6 +20,9 @@ on:
 jobs:
   ci:
     runs-on: ubuntu-latest
+    permissions:
+      # required to push to gh-pages
+      contents: write
     strategy:
       fail-fast: false
       matrix:

.github/workflows/cleanup.yml

@@ -4,6 +4,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read
+
 on:
   workflow_dispatch:
   schedule:
@@ -12,6 +16,9 @@ on:
 jobs:
   branches:
     runs-on: ubuntu-latest
+    permissions:
+      # required to remove git branch
+      contents: write
     strategy:
       fail-fast: false
       matrix:

.github/workflows/labels.yml

@@ -4,10 +4,14 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read
+
 on:
   push:
     branches:
-      - 'dev'
+      - 'master'
     paths:
       - '.github/labels.yml'
       - '.github/workflows/labels.yml'
@@ -19,6 +23,11 @@ on:
 jobs:
   labeler:
     runs-on: ubuntu-latest
+    permissions:
+      # same as global permissions
+      contents: read
+      # required to update labels
+      issues: write
     steps:
       -
         name: Checkout

.github/workflows/validate.yml

@@ -4,6 +4,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+# https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions
+permissions:
+  contents: read
+
 on:
   push:
     branches: