Restrict github token permissions

Author: trask

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ main ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/ossf-scorecard.yml

@@ -8,7 +8,8 @@ on:
     - cron: "39 12 * * 2" # once a week
   workflow_dispatch:
 
-permissions: read-all
+permissions:
+  contents: read
 
 jobs:
   analysis:

.github/workflows/test.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ main ]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     timeout-minutes: 60