bump copilot.vim from 1729557 to 719dd8d (#814)

Bumps [.config/nvim/pack/github/start/copilot.vim](https://github.com/github/copilot.vim) from `1729557` to `719dd8d`.
- [Commits](github/copilot.vim@1729557...719dd8d)

---
updated-dependencies:
- dependency-name: ".config/nvim/pack/github/start/copilot.vim"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>