CodeQL suggestions

Author: sirknightj

.github/workflows/pr-desc-lint.yml

@@ -11,6 +11,10 @@ on:
       - reopened
       - edited
 
+permissions:
+  contents: read
+  pull-requests: read
+
 jobs:
   check-description:
     runs-on: macos-latest

.github/workflows/samples.yml

@@ -10,6 +10,10 @@ on:
       - develop
       - master
 
+permissions:
+  contents: read
+  actions: write
+
 env:
   SAMPLE_MP4_LOCATION: https://raw.githubusercontent.com/aws-samples/amazon-kinesis-video-streams-demos/refs/heads/master/sample-video/sample.mp4