drop to @v1

Author: brentru

.github/workflows/githubci.yml

@@ -12,10 +12,9 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      uses: actions/setup-python@v2
+    - uses: actions/setup-python@v1
       with:
-        # 3.9 has issue with intelhex https://github.com/python-intelhex/intelhex/issues/45
-        python-version: '3.8'
+        python-version: '3.x'
     - uses: actions/checkout@v2
     - uses: actions/checkout@v2
       with: