Update github_test.yml

Adds a better description, but removes testing on pull in main to stop bug from occurring

.github/workflows/github_test.yml

@@ -2,13 +2,11 @@
 # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python
 
 name: GitHub Unit Testing
-run-name: Unit Testing on ${{ github.event_name }}
+run-name: Unit Testing on ${{ github.event.push.head_commit.message }}
 
 on:
   push:
     branches: [ "development" ]
-  pull_request:
-    branches: [ "main" ]
 
 permissions:
   contents: read