git subrepo pull packages/Catch2

subrepo:
  subdir:   "packages/Catch2"
  merged:   "2b34b5c7d"
upstream:
  origin:   "git@github.com:catchorg/Catch2.git"
  branch:   "master"
  commit:   "2b34b5c7d"
git-subrepo:
  version:  "0.4.1"
  origin:   "git@github.com:ingydotnet/git-subrepo.git"
  commit:   "a04d8c2"