fix kwargs for gitops formula

[enekofb]

Closes #36

Applies suggestion from #36 (comment)

Cask 'gitops' is unreadable: wrong constant name #<Class:0x0000000127d5e3f0>
Warning: Treating /Users/enekofb/projects/github.com/weaveworks/homebrew-tap/Formula/gitops.rb as a formula.
==> Fetching gitops
==> Downloading https://github.com/weaveworks/weave-gitops/releases/download/v0.37.0/gitops-Darwin-arm64.tar.gz
Already downloaded: /Users/enekofb/Library/Caches/Homebrew/downloads/f49ca5e63c0ea4f1046fd40ca231f45d388b354026cdc60fdf251d2191f7c850--gitops-Darwin-arm64.tar.gz
==> Caveats
zsh completions have been installed to:
  /opt/homebrew/share/zsh/site-functions
==> Summary
🍺  /opt/homebrew/Cellar/gitops/0.37.0: 7 files, 65.3MB, built in 2 seconds
==> Running `brew cleanup gitops`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).

➜  homebrew-tap git:(issues/36) gitops version                                                                                                   Current Version: 0.37.0
GitCommit: 3f850ced58c9fe9d593807e299058e0e06c735eb
BuildTime: 2023-11-22T13:24:19Z
Branch: releases/v0.37.0