Run CI on all pushes / PR's (#9538)

.github/workflows/superset-e2e.yml

@@ -1,9 +1,6 @@
 name: E2E
 
-on:
-  push:
-    branches: [ master ]
-  pull_request:
+on: [push, pull_request]
 
 jobs:
   cypress:

.github/workflows/superset-frontend.yml

@@ -1,13 +1,6 @@
 name: Frontend
 
-on:
-  push:
-    branches: [ master ]
-    paths:
-    - superset-frontend/**
-  pull_request:
-    paths:
-    - superset-frontend/**
+on: [push, pull_request]
 
 jobs:
   frontend-build:

.github/workflows/superset-python.yml

@@ -1,23 +1,6 @@
 name: Python
 
-on:
-  # only build on direct push to `master` branch
-  push:
-    branches: [ master ]
-    paths:
-    - ./**/*.py
-    - superset/**
-    - tests/**
-    - requirements*.txt
-  # but also build on pull requests to any branch
-  # (the so-called feature branch)
-  pull_request:
-    paths:
-    - ./**/*.py
-    - superset/**
-    - tests/**
-    - setup.py
-    - requirements*.txt
+on: [push, pull_request]
 
 jobs:
   lint: