Auto merge of #4058 - rust-lang:renovate/git2-0.x, r=locks

Update Rust crate git2 to 0.13.23

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [git2](https://crates.io/crates/git2) | dependencies | patch | `0.13.0` -> `0.13.23` |

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Author: bors

Cargo.lock

@@ -57,7 +57,7 @@ dotenv = "0.15"
 flate2 = "1.0"
 futures-channel = { version = "0.3.1", default-features = false }
 futures-util = "0.3"
-git2 = "0.13.0"
+git2 = "0.13.23"
 hex = "0.4"
 http = "0.2"
 hyper = { version = "0.14", features = ["client", "http1"] }