[Renovate] Update Rust crate git2 to 0.19.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
git2	dependencies	minor	0.18.3 -> 0.19.0

---

Release Notes

rust-lang/git2-rs (git2)

v0.19.0

Compare Source

0.18.3...0.19.0

Added

• Added opts functions to control server timeouts (get_server_connect_timeout_in_milliseconds, set_server_connect_timeout_in_milliseconds, get_server_timeout_in_milliseconds, set_server_timeout_in_milliseconds), and add ErrorCode::Timeout.
  #​1052

Changed

• ❗ Updated to libgit2 1.8.1
  #​1032
• Reduced size of the Error struct.
  #​1053

Fixed

• Fixed some callbacks to relay the error from the callback to libgit2.
  #​1043

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.