[YUNIKORN-1025] Run github actions on push as well as pull request (#60)

Closes: #60
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a3feed7..326287a 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -4,6 +4,9 @@
   pull_request:
     branches: 
       - master
+  push:
+    branches:
+      - master
 
 jobs:
   build: