Updates triggers for test actions

Author: liudmylaru

.github/workflows/run-unittests-default_setup.yml

@@ -2,10 +2,9 @@ name: "[Py3.8][Py3.9][Py3.10] tests/unitary/default_setup/**"
 
 on:
   workflow_dispatch:
-  push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
+    branches: [ "main" ]
 
 # Cancel in progress workflows on pull_requests.
 # https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value

.github/workflows/run-unittests-py38-cov-report.yml

@@ -2,10 +2,9 @@ name: "[Py3.8][COV REPORT] tests/unitary/**"
 
 on:
   workflow_dispatch:
-  push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
+    branches: [ "main" ]
 
 # Cancel in progress workflows on pull_requests.
 # https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value

.github/workflows/run-unittests-py39-py310.yml

@@ -2,10 +2,9 @@ name: "[Py3.9][Py3.10] - tests/unitary/**"
 
 on:
   workflow_dispatch:
-  push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
+    branches: [ "main" ]
 
 # Cancel in progress workflows on pull_requests.
 # https://docs.github.com/en/actions/using-jobs/using-concurrency#example-using-a-fallback-value