Add tests on Ubuntu 18.04 in CI

flashcode · flashcode · commit 37e96dd2b01a · 2021-11-24T20:20:05.000+01:00
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -12,6 +12,7 @@ jobs:
       matrix:
         os:
           - ubuntu-20.04
+          - ubuntu-18.04
           - macos-11
           - macos-10.15
         python-version:
