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

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: arnested

.github/workflows/yaml.yml

@@ -1,6 +1,8 @@
 ---
 on: pull_request
 name: YAML
+permissions:
+  contents: read
 
 # Detect if this action is already running, and cancel it.
 # This most likely happened because a second push has been made to a branch.