[enh] 3.8: Install git, pre-commit, isort, and pyupgrade

pre-commit is not available in Buster, will be in Bullseye
1 job for 1_drop_3.5_isort_pytest_make in 3 minutes and 26 seconds (queued for 6 seconds)
Status Name Job ID Coverage
  Test
passed test_build_image #56716
docker

00:03:26