chore: Removed Push Trigger from master

Removed push trigger since pushing directly to master isn't possible anyways. Tests will be run on Pull requests and are required there.
Avoids duplicate test runs

Author: humpalum

.github/workflows/main.yml

@@ -3,9 +3,9 @@ name: CI
 on:
   # Trigger the workflow on push or pull requests, but only for the
   # main branch
-  push:
-    branches:
-    - master
+  #push:
+  #  branches:
+  #  - master
   pull_request:
     branches:
     - master