chore(tests): run unit tests after merge

This adds an additional trigger to the unit tests to run post-submit

Author: daniel-sanche

.github/workflows/unittest.yml

@@ -4,7 +4,9 @@ on:
   pull_request:
     branches:
       - main
-
+  push:
+    branches:
+      - main
 jobs:
   run-unittests:
     name: unit${{ matrix.option }}-${{ matrix.python }}