Auto merge of #4056 - rust-lang:renovate/chrono-0.x, r=locks

Update Rust crate chrono to 0.4.19

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [chrono](https://crates.io/crates/chrono) | dependencies | patch | `0.4.0` -> `0.4.19` |

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Author: bors

Cargo.toml

@@ -34,7 +34,7 @@ anyhow = "1.0"
 base64 = "0.13"
 cargo-registry-markdown = { path = "cargo-registry-markdown" }
 cargo-registry-s3 = { path = "cargo-registry-s3" }
-chrono = { version = "0.4.0", features = ["serde"] }
+chrono = { version = "0.4.19", features = ["serde"] }
 clap = "=3.0.0-beta.5"
 
 conduit = "0.9.0-alpha.5"