fix: bump git2 to latest to support sparse checkout

Author: adriencaccia

Cargo.lock

@@ -39,7 +39,7 @@ simplelog = { version = "0.12.1", default-features = false, features = [
     "termcolor",
 ] }
 tempfile = "3.10.0"
-git2 = "0.18.3"
+git2 = "0.20.2"
 nestify = "0.3.3"
 gql_client = { git = "https://github.com/CodSpeedHQ/gql-client-rs" }
 serde_yaml = "0.9.34"