Enable push trigger only for the master branch (#435)

* Enable push trigger only for master

Co-authored-by: Alexander Borzunov <hxrussia@gmail.com>

.github/workflows/check-style.yml

@@ -1,6 +1,9 @@
 name: Check style
 
-on: [ push, pull_request ]
+on:
+  push:
+    branches: [ master ]
+  pull_request:
 
 jobs:
   black:

.github/workflows/push-docker-image.yml

@@ -8,7 +8,6 @@ on:
   pull_request:
     branches: [ master ]
 
-
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/run-benchmarks.yml

@@ -1,7 +1,9 @@
 name: Benchmarks
 
-on: [ push, pull_request ]
-
+on:
+  push:
+    branches: [ master ]
+  pull_request:
 
 jobs:
   run_benchmarks:

.github/workflows/run-tests.yml

@@ -1,7 +1,9 @@
 name: Tests
 
-on: [ push, pull_request ]
-
+on:
+  push:
+    branches: [ master ]
+  pull_request:
 
 jobs:
   run_tests: