add permissions to test github action (#5)

* Potential fix for code scanning alert no. 1: Workflow does not contain permissions

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* lint

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.github/workflows/ci.yml

@@ -4,6 +4,9 @@ on:
             - main
     pull_request:
 
+permissions:
+    contents: read
+
 concurrency:
     group: ${{ github.workflow }}-${{ github.ref }}
     cancel-in-progress: true