build(deps): bump chrono from 0.4.18 to 0.4.19

Bumps [chrono](https://github.com/chronotope/chrono) from 0.4.18 to 0.4.19.
- [Release notes](https://github.com/chronotope/chrono/releases)
- [Changelog](https://github.com/chronotope/chrono/blob/main/CHANGELOG.md)
- [Commits](https://github.com/chronotope/chrono/compare/v0.4.18...v0.4.19)

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

Cargo.lock

@@ -401,9 +401,9 @@ checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 
 [[package]]
 name = "chrono"
-version = "0.4.18"
+version = "0.4.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d021fddb7bd3e734370acfa4a83f34095571d8570c039f1420d77540f68d5772"
+checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73"
 dependencies = [
  "libc",
  "num-integer",

zebra-consensus/Cargo.toml

@@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
 edition = "2018"
 
 [dependencies]
-chrono = "0.4.18"
+chrono = "0.4.19"
 color-eyre = "0.5"
 once_cell = "1.4"
 rand = "0.7"