chore(deps): update rust crate git2 to 0.20

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
git2	dependencies	minor	0.18 -> 0.20

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Release Notes

rust-lang/git2-rs (git2)

v0.20.0

Compare Source

0.19.0...0.20.0

Added

• Debug is now implemented for transport::Service
  #​1074
• Added Repository::commondir
  #​1079
• Added Repository::merge_base_octopus
  #​1088
• Restored impls for PartialOrd, Ord, and Hash for bitflags types that were inadvertently removed in a prior release.
  #​1096
• Added CheckoutBuilder::disable_pathspec_match
  #​1107
• Added PackBuilder::write
  #​1110

Changed

• ❗ Updated to libgit2 1.9.0
  #​1111
• ❗ Removed the ssh_key_from_memory Cargo feature, it was unused.
  #​1087
• ❗ Errors from Tree::walk are now correctly reported to the caller.
  #​1098
• ❗ The trace_set callback now takes a &[u8] instead of a &str.
  #​1071
• ❗ Error::last_error now returns Error instead of Option<Error>.
  #​1072

Fixed

• Fixed OdbReader::read return value.
  #​1061
• When a credential helper executes a shell command, don't pop open a console window on Windows.
  #​1075

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

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
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The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --workspace
    Updating crates.io index
error: failed to select a version for `libgit2-sys`.
    ... required by package `git2 v0.18.2`
    ... which satisfies dependency `git2 = "^0.18.2"` of package `cocogitto v6.2.0`
    ... which satisfies dependency `cocogitto = "^6.2"` of package `koji v3.0.0 (/tmp/renovate/repos/github/cococonscious/koji)`
versions that meet the requirements `^0.16.2` are: 0.16.2+1.7.2

the package `libgit2-sys` links to the native library `git2`, but it conflicts with a previous package which links to `git2` as well:
package `libgit2-sys v0.18.0+1.9.0`
    ... which satisfies dependency `libgit2-sys = "^0.18.0"` of package `git2 v0.20.0`
    ... which satisfies dependency `git2 = "^0.20"` of package `koji v3.0.0 (/tmp/renovate/repos/github/cococonscious/koji)`
Only one package in the dependency graph may specify the same links value. This helps ensure that only one copy of a native library is linked in the final binary. Try to adjust your dependencies so that only one package uses the `links = "git2"` value. For more information, see https://doc.rust-lang.org/cargo/reference/resolver.html#links.

failed to select a version for `libgit2-sys` which could resolve this conflict