Bump env_logger from 0.7.1 to 0.8.1

Bumps [env_logger](https://github.com/env-logger-rs/env_logger) from 0.7.1 to 0.8.1.
- [Release notes](https://github.com/env-logger-rs/env_logger/releases)
- [Changelog](https://github.com/env-logger-rs/env_logger/blob/master/CHANGELOG.md)
- [Commits](https://github.com/env-logger-rs/env_logger/compare/v0.7.1...v0.8.1)

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

Cargo.lock

@@ -140,7 +140,7 @@ dependencies = [
  "cfg-if",
  "clang-sys",
  "clap",
- "env_logger",
+ "env_logger 0.7.1",
  "lazy_static",
  "lazycell",
  "log",
@@ -667,7 +667,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
 dependencies = [
  "atty",
- "humantime",
+ "humantime 1.3.0",
+ "log",
+ "regex",
+ "termcolor",
+]
+
+[[package]]
+name = "env_logger"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54532e3223c5af90a6a757c90b5c5521564b07e5e7a958681bcd2afad421cdcd"
+dependencies = [
+ "atty",
+ "humantime 2.0.1",
  "log",
  "regex",
  "termcolor",
@@ -1000,6 +1013,12 @@ dependencies = [
  "quick-error",
 ]
 
+[[package]]
+name = "humantime"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c1ad908cc71012b7bea4d0c53ba96a8cba9962f048fa68d143376143d863b7a"
+
 [[package]]
 name = "hyper"
 version = "0.13.7"
@@ -1313,7 +1332,7 @@ dependencies = [
  "console",
  "dirs",
  "dotenv",
- "env_logger",
+ "env_logger 0.8.1",
  "from-pest",
  "lazy_static",
  "leo-compiler",

Cargo.toml

@@ -100,7 +100,7 @@ version = "0.12.0"
 version = "0.15.0"
 
 [dependencies.env_logger]
-version = "0.7"
+version = "0.8"
 
 [dependencies.from-pest]
 version = "0.3.1"