modify python version

Author: niuhuan

.github/workflows/ci.yml

@@ -108,11 +108,11 @@ jobs:
       if: steps.release_check.outputs.skip_build != 'true' && matrix.config.host == 'windows-latest'
       run: git clone https://github.com/jslater89/flutter-rs-engine-builds.git C:\repo
 
-    - name: Install Python 2.x
+    - name: Install Python 3.x
       if: steps.release_check.outputs.skip_build != 'true' && matrix.config.host != 'macos-latest'
-      uses: actions/setup-python@v1
+      uses: actions/setup-python@v2
       with:
-        python-version: '2.x'
+        python-version: '3.x'
 
     - name: Install dependencies (ubuntu)
       if: steps.release_check.outputs.skip_build != 'true' && matrix.config.host == 'ubuntu-latest'