Update docs.yml

.github/workflows/docs.yml

@@ -3,14 +3,18 @@ on:
   push:
     branches:
       - master
+    paths: 
+      - "**.md"
+      - "**.yml"
+      - docs/**
 
 jobs:
   build:
     name: Deploy docs
     runs-on: ubuntu-latest
     steps:
       - name: Checkout master
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Deploy docs
         uses: mhausenblas/mkdocs-deploy-gh-pages@master