chore: run CI tests on ubuntu 20.04 because 18.04 no longer supported

vkarpov15 · vkarpov15 · commit eeabe5fb0dde · 2023-04-04T15:03:55.000-04:00
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -4,7 +4,7 @@ on:
     push:
 jobs:
   test:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
       matrix:
