Skip CI for docs-only changes (#107)

Add paths-ignore to avoid running the full Docker + test suite for
changes that only touch markdown, LICENSE, or issue/PR templates.

Author: piekstra

.github/workflows/python-package.yml

@@ -5,7 +5,17 @@ name: Python package
 on:
   push:
     branches: [ main ]
+    paths-ignore:
+      - '*.md'
+      - 'LICENSE'
+      - '.github/ISSUE_TEMPLATE/**'
+      - '.github/PULL_REQUEST_TEMPLATE/**'
   pull_request:
+    paths-ignore:
+      - '*.md'
+      - 'LICENSE'
+      - '.github/ISSUE_TEMPLATE/**'
+      - '.github/PULL_REQUEST_TEMPLATE/**'
 
 jobs:
   build: