github actions recommends checkout@v2

Author: scivision

.github/workflows/CI.yml

@@ -27,7 +27,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - name: Set up Python 3.x
       uses: actions/setup-python@v1 # Use pip to install latest CMake, & FORD/Jin2For, etc.
@@ -109,7 +109,7 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
 
     - name: Set up Python 3.x
       uses: actions/setup-python@v1

.github/workflows/PR-review.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code.
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: misspell
         uses: reviewdog/action-misspell@v1
         with: