feat(ci): Drop ubuntu from dev env CI (#29956)

It was a nice wish to test out what some community members would use, however, it breaks often and most development happens on Macs.

.github/workflows/development-environment.yml

@@ -20,7 +20,7 @@ jobs:
     timeout-minutes: 40
     strategy:
       matrix:
-        os: [macos-11.0, ubuntu-20.04]
+        os: [macos-11.0]
       fail-fast: false
     env:
       # Make the environment more similar to what Mac defaults to