fix: resolve zizmor template-injection + excessive-permissions (INFRA-869) (#18)

test.yml: contents: read + persist-credentials: false (artipacked).

Verified with the org zizmor config: 0 findings outside the deferred set. INFRA-869

Author: Rumbles

.github/workflows/test.yml

@@ -6,12 +6,17 @@ on:
   pull_request:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - uses: actions/setup-node@v4
         with: