fix actions

Author: ndem0

.github/workflows/pypi-publish.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   docs:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
 
@@ -26,6 +26,6 @@ jobs:
 
     - name: Publish distribution to PyPI
       if: startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         password: ${{ secrets.PYPI_API_TOKEN }}

.github/workflows/sphinx-build.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   docs:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2