Updates triggers for test actions

Author: liudmylaru

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

@@ -3,7 +3,6 @@ name: "[Py3.8][Py3.9][Py3.10] tests/unitary/default_setup/**"
 on:
   workflow_dispatch:
   push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
     branches: [ "main" ]

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

@@ -3,7 +3,6 @@ name: "[Py3.8][COV REPORT] tests/unitary/**"
 on:
   workflow_dispatch:
   push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
     branches: [ "main" ]

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

@@ -3,7 +3,6 @@ name: "[Py3.9][Py3.10] - tests/unitary/**"
 on:
   workflow_dispatch:
   push:
-    branches: [ "main" ]
   pull_request:
     types: [opened, reopened]
     branches: [ "main" ]