build(deps): Update env_logger requirement from 0.8.1 to 0.9.0 (libp2p#2141)

Updates the requirements on [env_logger](https://github.com/env-logger-rs/env_logger) to permit the latest version.
- [Release notes](https://github.com/env-logger-rs/env_logger/releases)
- [Changelog](https://github.com/env-logger-rs/env_logger/blob/main/CHANGELOG.md)
- [Commits](rust-cli/env_logger@v0.8.3...v0.9.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.toml

@@ -96,7 +96,7 @@ libp2p-websocket = { version = "0.30.0", path = "transports/websocket", optional
 
 [dev-dependencies]
 async-std = { version = "1.6.2", features = ["attributes"] }
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 tokio = { version = "1.0.1", features = ["io-util", "io-std", "macros", "rt", "rt-multi-thread"] }
 
 [workspace]

misc/multistream-select/Cargo.toml

@@ -19,7 +19,7 @@ unsigned-varint = "0.7"
 
 [dev-dependencies]
 async-std = "1.6.2"
-env_logger = "0.8"
+env_logger = "0.9"
 libp2p-core = { path = "../../core" }
 libp2p-mplex = { path = "../../muxers/mplex" }
 libp2p-plaintext = { path = "../../transports/plaintext" }

muxers/mplex/Cargo.toml

@@ -24,7 +24,7 @@ unsigned-varint = { version = "0.7", features = ["asynchronous_codec"] }
 [dev-dependencies]
 async-std = "1.7.0"
 criterion = "0.3"
-env_logger = "0.8"
+env_logger = "0.9"
 futures = "0.3"
 libp2p-tcp = { path = "../../transports/tcp" }
 libp2p-plaintext = { path = "../../transports/plaintext" }

protocols/gossipsub/Cargo.toml

@@ -30,7 +30,7 @@ regex = "1.4.0"
 
 [dev-dependencies]
 async-std = "1.6.3"
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 libp2p-plaintext = { path = "../../transports/plaintext" }
 libp2p-yamux = { path = "../../muxers/yamux" }
 libp2p-mplex = { path = "../../muxers/mplex" }

protocols/identify/Cargo.toml

@@ -20,7 +20,7 @@ wasm-timer = "0.2"
 
 [dev-dependencies]
 async-std = "1.6.2"
-env_logger = "0.8"
+env_logger = "0.9"
 libp2p-mplex = { path = "../../muxers/mplex" }
 libp2p-noise = { path = "../../transports/noise" }
 libp2p-tcp = { path = "../../transports/tcp" }

protocols/relay/Cargo.toml

@@ -29,7 +29,7 @@ wasm-timer = "0.2"
 prost-build = "0.8"
 
 [dev-dependencies]
-env_logger = "0.8.3"
+env_logger = "0.9.0"
 structopt = "0.3.21"
 libp2p = { path = "../.." }
 libp2p-kad = { path = "../kad" }

transports/dns/Cargo.toml

@@ -18,7 +18,7 @@ async-std-resolver = { version = "0.20", optional = true }
 smallvec = "1.6.1"
 
 [dev-dependencies]
-env_logger = "0.8"
+env_logger = "0.9"
 tokio-crate = { package = "tokio", version = "1.0", default-features = false, features = ["rt", "time"] }
 async-std-crate = { package = "async-std", version = "1.6" }
 

transports/noise/Cargo.toml

@@ -29,7 +29,7 @@ snow = { version = "0.8.0", features = ["default-resolver"], default-features =
 
 [dev-dependencies]
 async-io = "1.2.0"
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 libp2p-tcp = { path = "../../transports/tcp" }
 quickcheck = "0.9.0"
 sodiumoxide = "0.2.5"

transports/plaintext/Cargo.toml

@@ -20,7 +20,7 @@ unsigned-varint = { version = "0.7", features = ["asynchronous_codec"] }
 void = "1.0.2"
 
 [dev-dependencies]
-env_logger = "0.8.1"
+env_logger = "0.9.0"
 quickcheck = "0.9.0"
 rand = "0.7"
 

transports/tcp/Cargo.toml

@@ -30,4 +30,4 @@ async-io = ["async-io-crate", "if-watch"]
 [dev-dependencies]
 async-std = { version = "1.6.5", features = ["attributes"] }
 tokio-crate = { package = "tokio", version = "1.0.1", default-features = false, features = ["net", "rt"] }
-env_logger = "0.8.2"
+env_logger = "0.9.0"