Make GH actions only run on changes to sources

Author: oerc0122

.github/workflows/pylint.yml

@@ -1,6 +1,10 @@
 name: Pylint
 
-on: [push]
+on:
+  push:
+    paths:
+    - "castep_outputs/**"
+
 
 jobs:
   build:

.github/workflows/test_castep_outputs.yml

@@ -6,8 +6,12 @@ name: Python application
 on:
   push:
     branches: [ "main" ]
+    paths:
+    - "castep_outputs/**"
   pull_request:
     branches: [ "main" ]
+    paths:
+    - "castep_outputs/**"
 
 permissions:
   contents: read