Merge pull request #346 from koxudaxi/update_CI_os_version

Update CI os version

Author: koxudaxi

.github/workflows/docs.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build-deploy:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v1
 
@@ -35,4 +35,4 @@ jobs:
       env:
         PERSONAL_TOKEN: ${{ secrets.PERSONAL_TOKEN }}
         PUBLISH_BRANCH: gh-pages
-        PUBLISH_DIR: ./site
+        PUBLISH_DIR: ./site

.github/workflows/publish.yml

@@ -9,7 +9,7 @@ jobs:
   build-n-publish:
     name: Build and publish Python 🐍 distributions 📦 to PyPI
     if: "success() && startsWith(github.ref, 'refs/tags/')"
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
       - uses: actions/cache@v1