Merge pull request lukaslueg#24 from steveeJ-forks/pr/bump-git-13.2

Cargo: bump git to 0.13

Author: lukaslueg

Cargo.toml

@@ -20,7 +20,7 @@ nightly = []
 cargo-lock = { version = "4.0", default-features = false }
 semver = { version = "0.9", optional = true }
 chrono = { version = "0.4", optional = true }
-git2 = { version = "0.11", optional = true, default-features = false, features = [] }
+git2 = { version = "0.13", optional = true, default-features = false, features = [] }
 
 [dev-dependencies]
 tempdir = "0.3"