Update test.yml

Author: jackton1

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        platform: [ubuntu-20.04, ubuntu-latest, macos-latest, windows-latest]
+        platform: [ubuntu-latest, macos-latest, windows-latest]
         python-version: [3.6, 3.7, 3.8, 3.9, '3.10', 3.11]
         exclude:
           - platform: ubuntu-latest