- VSCode 1.53 bumped minimum GLIBCXX to 3.4.21 making it difficult to
  run tests on older platforms. Instead of disabling, we can use 1.52.1
  runtime temporarily and eventually upgrade infrastructure.
- https://code.visualstudio.com/updates/v1_53#_electron-11-update

Signed-off-by: Roland Grunberg <rgrunber@redhat.com>