Allow newer git2

Author: kornelski

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "crates-index"
 description = "Library for retrieving and interacting with the crates.io index"
-version = "0.19.8"
+version = "0.19.9"
 homepage = "https://lib.rs/crates-index"
 authors = ["Corey Farwell <[email protected]>", "Kornel <[email protected]>"]
 keywords = ["packaging", "index", "dependencies", "crate", "meta"]
@@ -13,7 +13,7 @@ edition = "2021"
 rust-version = "1.60"
 
 [dependencies]
-git2 = { version = "0.16", default-features = false }
+git2 = { version = ">=0.16, <=0.17", default-features = false }
 hex = { version = "0.4.3", features = ["serde"] }
 home = "0.5.4"
 memchr = "2.5.0"