Update submodules

M  .oh-my-zsh
M  .vim/bundle/asyncrun
M  .vim/bundle/vim-fugitive
M  .vim/bundle/vim-go

Automatically generated:
  source: Gitlab CI
  runner: bth-tower01/5 (12.0.2)
  job:    https://code.kodo.org.uk/dom/dotfiles/-/jobs/2549 (#2549)
  time:   Sun Mar  1 04:21:42 UTC 2020