GitHub Actions: do the tests for each push

Author: leszekhanusz

.github/workflows/lint.yml

@@ -1,6 +1,6 @@
 name: Lint
 
-on: [pull_request]
+on: [push, pull_request]
 
 jobs:
   build:
@@ -19,4 +19,4 @@ jobs:
     - name: Run lint and static type checks
       run: tox
       env:
-        TOXENV: flake8,black,import-order,mypy,manifest
+        TOXENV: flake8,black,import-order,mypy,manifest

.github/workflows/tests.yml

@@ -1,6 +1,6 @@
 name: Tests
 
-on: [pull_request]
+on: [push, pull_request]
 
 jobs:
   build:
@@ -23,4 +23,4 @@ jobs:
     - name: Test with tox
       run: tox
       env:
-        TOXENV: ${{ matrix.toxenv }}
+        TOXENV: ${{ matrix.toxenv }}