Bump git2 from 0.13.20 to 0.16.1

Bumps [git2](https://github.com/rust-lang/git2-rs) from 0.13.20 to 0.16.1.
- [Changelog](https://github.com/rust-lang/git2-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/git2-rs/compare/0.13.20...0.16.1)

---
updated-dependencies:
- dependency-name: git2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.lock

@@ -92,9 +92,9 @@ dependencies = [
 
 [[package]]
 name = "git2"
-version = "0.13.20"
+version = "0.16.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9831e983241f8c5591ed53f17d874833e2fa82cac2625f3888c50cbfe136cba"
+checksum = "ccf7f68c2995f392c49fffb4f95ae2c873297830eb25c6bc4c114ce8f4562acc"
 dependencies = [
  "bitflags",
  "libc",
@@ -153,13 +153,14 @@ checksum = "9385f66bf6105b241aa65a61cb923ef20efc665cb9f9bb50ac2f0c4b7f378d41"
 
 [[package]]
 name = "libgit2-sys"
-version = "0.12.21+1.1.0"
+version = "0.14.2+1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86271bacd72b2b9e854c3dcfb82efd538f15f870e4c11af66900effb462f6825"
+checksum = "7f3d95f6b51075fe9810a7ae22c7095f12b98005ab364d8544797a825ce946a4"
 dependencies = [
  "cc",
  "libc",
  "libz-sys",
+ "openssl-sys",
  "pkg-config",
 ]
 

Cargo.toml

@@ -42,7 +42,7 @@ default-features = false
 features = ["format"]
 
 [dependencies.git2]
-version = "0.13"
+version = "0.16"
 optional = true
 default-features = false