Update Rust crate git2 to 0.19.0 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
git2	dependencies	minor	0.18.3 -> 0.19.0

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Release Notes

rust-lang/git2-rs (git2)

### [`v0.19.0`](https://togithub.com/rust-lang/git2-rs/blob/HEAD/CHANGELOG.md#0190---2024-06-13) [Compare Source](https://togithub.com/rust-lang/git2-rs/compare/git2-0.18.3...git2-0.19.0) [0.18.3...0.19.0](https://togithub.com/rust-lang/git2-rs/compare/git2-0.18.3...git2-0.19.0) ##### 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](https://togithub.com/rust-lang/git2-rs/pull/1052) ##### Changed - ❗ Updated to libgit2 [1.8.1](https://togithub.com/libgit2/libgit2/releases/tag/v1.8.1) [#​1032](https://togithub.com/rust-lang/git2-rs/pull/1032) - Reduced size of the `Error` struct. [#​1053](https://togithub.com/rust-lang/git2-rs/pull/1053) ##### Fixed - Fixed some callbacks to relay the error from the callback to libgit2. [#​1043](https://togithub.com/rust-lang/git2-rs/pull/1043)

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