github actions: push run test

Author: jakeloo

.github/workflows/hardhat_test.yml

@@ -5,6 +5,8 @@ name: Hardhat Tests
 # Controls when the workflow will run
 on:
   # Triggers the workflow on push or pull request events but only for the main branch
+  push:
+    branches: [ main ]
   pull_request:
     branches: [ main ]