Potential fix for code scanning alert no. 1: Workflow does not contain permissions (#4274)

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.github/workflows/arc-update-runners-scheduled.yaml

@@ -1,6 +1,9 @@
 # This workflows polls releases from actions/runner and in case of a new one it
 # updates files containing runner version and opens a pull request.
 name: Runner Updates Check (Scheduled Job)
+permissions:
+  pull-requests: write
+  contents: write
 
 on:
   schedule:

.github/workflows/global-run-first-interaction.yaml

@@ -1,5 +1,10 @@
 name: First Interaction
 
+permissions:
+  contents: read
+  issues: write
+  pull-requests: write
+
 on:
   issues:
     types: [opened]