CI: Run tests and codestyle on release branches and tags (#627)

Author: rrjbca

.github/workflows/codestyle.yaml

@@ -4,10 +4,14 @@ on:
     branches:
     - main
     - module/*
+    - 'v*x'
+    tags:
+    - 'v*'
   pull_request:
     branches:
     - main
     - module/*
+    - 'v*x'
 jobs:
   flake8:
     runs-on: ubuntu-latest

.github/workflows/tests.yaml

@@ -4,10 +4,14 @@ on:
     branches:
     - main
     - module/*
+    - 'v*x'
+    tags:
+    - 'v*'
   pull_request:
     branches:
     - main
     - module/*
+    - 'v*x'
 jobs:
   test:
     name: ${{ matrix.name }}