Don't lint twice (#18)

Author: joostlek

.github/workflows/linting.yaml

@@ -4,6 +4,8 @@ name: Linting
 # yamllint disable-line rule:truthy
 on:
   push:
+    branches:
+      - main
   pull_request:
   workflow_dispatch:
 

.github/workflows/tests.yaml

@@ -4,6 +4,8 @@ name: Testing
 # yamllint disable-line rule:truthy
 on:
   push:
+    branches:
+      - main
   pull_request:
   workflow_dispatch: