CI: Update ci.yml

Author: MKaczkow

.github/workflows/ci.yml

@@ -3,10 +3,10 @@ name: CI
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
     branches:
-      - main
+      - master
 
 jobs:
   lint:
@@ -47,4 +47,4 @@ jobs:
           pip install -r requirements.txt
 
       - name: Run tests
-        run: pytest
+        run: pytest