Auto merge of #4508 - rust-lang:renovate/tokio-1.x, r=Turbo87

Update Rust crate tokio to v1.16.0

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [tokio](https://crates.io/crates/tokio) | dev-dependencies | minor | `=1.15.0` -> `=1.16.0` |
| [tokio](https://crates.io/crates/tokio) | dependencies | minor | `=1.15.0` -> `=1.16.0` |

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Author: bors

Cargo.lock

@@ -82,7 +82,7 @@ swirl = { git = "https://github.com/sgrif/swirl.git", rev = "e87cf37" }
 tar = "=0.4.38"
 tempfile = "=3.3.0"
 thiserror = "=1.0.30"
-tokio = { version = "=1.15.0", features = ["net", "signal", "io-std", "io-util", "rt-multi-thread", "macros"]}
+tokio = { version = "=1.16.0", features = ["net", "signal", "io-std", "io-util", "rt-multi-thread", "macros"]}
 toml = "=0.5.8"
 tracing = "=0.1.29"
 tracing-subscriber = { version = "=0.3.7", features = ["env-filter"] }
@@ -94,7 +94,7 @@ claim = "=0.5.0"
 conduit-test = "=0.10.0"
 hyper-tls = "=0.5.0"
 lazy_static = "=1.4.0"
-tokio = "=1.15.0"
+tokio = "=1.16.0"
 tower-service = "=0.3.1"
 
 [build-dependencies]