Merge pull request #26 from adafruit/tannewt-patch-1

update actions/checkout

Author: ladyada

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
       run: |
         python3 --version
     - name: Checkout Current Repo
-      uses: actions/checkout@v1
+      uses: actions/checkout@v2
       with:
         submodules: true
     - name: Checkout tools repo