ci: set minimal permission

Author: pan93412

.github/workflows/lint.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Lint and Check Formatting

.github/workflows/test.yaml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     name: Run Tests