Merge pull request #15 from OpenAstronomy/dependabot/github_actions/actions/setup-python-4

Bump actions/setup-python from 2 to 4

Author: Cadair

action.yml

@@ -32,7 +32,7 @@ runs:
     with:
       fetch-depth: 0
 
-  - uses: actions/setup-python@v2
+  - uses: actions/setup-python@v4
     with:
       python-version: ${{ inputs.python-version }}