ci: don't run tests on docs only change

.github/workflows/test.yml

@@ -1,10 +1,18 @@
-name: Test
-
-on: [push, pull_request]
+name: Tests
+
+on:
+  push:
+    paths-ignore:
+    - 'LICENSE'
+    - '**.md'
+  pull_request:
+    paths-ignore:
+    - 'LICENSE'
+    - '**.md'
 
 jobs:
   unit:
-    name: Unit Test
+    name: Unit Tests
     runs-on: ubuntu-latest
 
     strategy:
@@ -34,4 +42,4 @@ jobs:
 
       - name: Run tests
         run: pytest
-        working-directory: test
+        working-directory: test