chore(deps): Update Rust crate git2 to >=0.16, <=0.20

Author: renovate[bot]

Cargo.toml

@@ -130,7 +130,7 @@ anstream = "0.6.13"
 anstyle = "1.0.6"
 
 git-branch-stash = { version = "0.10.0", path = "crates/git-branch-stash" }
-git2 = { version = ">=0.16, <=0.19", default-features = false, features = ["vendored-libgit2"] }
+git2 = { version = ">=0.16, <=0.20", default-features = false, features = ["vendored-libgit2"] }
 serde_json = "1.0.116"
 itertools = "0.14.0"
 

crates/git-branch-stash/Cargo.toml

@@ -12,7 +12,7 @@ rust-version.workspace = true
 include.workspace = true
 
 [dependencies]
-git2 = { version = ">=0.16, <=0.18", default-features = false }
+git2 = { version = ">=0.16, <=0.20", default-features = false }
 git-config-env = "0.2.1"
 git2-ext = "0.6.1"
 log = "0.4.21"