Update GHA configurations (#3790)

* Add read constraints on read-only jobs

* Close stale issues once a day

* Add workflow for CodeQL

.github/codeql.yml

@@ -0,0 +1,2 @@
+paths:
+- "boto3/"

.github/workflows/codeql.yml

@@ -0,0 +1,35 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: ["develop"]
+  pull_request:
+    branches: ["develop"]
+  schedule:
+    - cron: "0 0 * * 5"
+
+permissions: "read-all"
+
+jobs:
+  analyze:
+    name: "Analyze"
+    runs-on: "ubuntu-latest"
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    steps:
+    - name: "Checkout repository"
+      uses: "actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3"
+
+    - name: "Run CodeQL init"
+      uses: "github/codeql-action/init@cdcdbb579706841c47f7063dda365e292e5cad7a"
+      with:
+        config-file: "./.github/codeql.yml"
+        languages: "python"
+
+    - name: "Run CodeQL autobuild"
+      uses: "github/codeql-action/autobuild@cdcdbb579706841c47f7063dda365e292e5cad7a"
+
+    - name: "Run CodeQL analyze"
+      uses: "github/codeql-action/analyze@cdcdbb579706841c47f7063dda365e292e5cad7a"

.github/workflows/fail-master-prs.yml

@@ -4,6 +4,9 @@ on:
   pull_request:
     branches: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   fail:
     runs-on: ubuntu-latest

.github/workflows/lint.yml

@@ -5,6 +5,9 @@ on:
   pull_request:
     branches-ignore: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     runs-on: ubuntu-20.04

.github/workflows/run-tests.yml

@@ -5,6 +5,9 @@ on:
   pull_request:
     branches-ignore: [ master ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
 

.github/workflows/stale_issue.yml

@@ -3,7 +3,10 @@ name: "Close stale issues"
 # Controls when the action will run.
 on:
   schedule:
-  - cron: "0 * * * *"
+  - cron: "0 0 * * *"
+
+permissions:
+  contents: read
 
 jobs:
   issue-cleanup:
@@ -36,6 +39,7 @@ jobs:
         # Issue timing
         days-before-stale: 5
         days-before-close: 2
+
         # If you don't want to mark a issue as being ancient based on a
         # threshold of "upvotes", you can set this here. An "upvote" is
         # the total number of +1, heart, hooray, and rocket reactions