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[bot] <support@github.com>

Cargo.lock

@@ -272,9 +272,9 @@ dependencies = [
 
 [[package]]
 name = "env_logger"
-version = "0.7.1"
+version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44533bbbb3bb3c1fa17d9f2e4e38bbbaf8396ba82193c4cb1b6445d711445d36"
+checksum = "54532e3223c5af90a6a757c90b5c5521564b07e5e7a958681bcd2afad421cdcd"
 dependencies = [
  "atty",
  "humantime",
@@ -388,12 +388,9 @@ dependencies = [
 
 [[package]]
 name = "humantime"
-version = "1.3.0"
+version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "df004cfca50ef23c36850aaaa59ad52cc70d0e90243c3c7737a4dd32dc7a3c4f"
+checksum = "3c1ad908cc71012b7bea4d0c53ba96a8cba9962f048fa68d143376143d863b7a"
-dependencies = [
- "quick-error",
-]
 
 [[package]]
 name = "js-sys"
@@ -643,12 +640,6 @@ dependencies = [
  "unicode-xid",
 ]
 
-[[package]]
-name = "quick-error"
-version = "1.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
-
 [[package]]
 name = "quote"
 version = "1.0.7"

Cargo.toml

@@ -49,7 +49,7 @@ x509-parser = "0.8.0-beta1"
 zeroize = "1"
 
 [dev-dependencies]
-env_logger = "0.7"
+env_logger = "0.8"
 ring = "0.16.15"
 lazy_static = "1"
 

cli/Cargo.toml

@@ -14,7 +14,7 @@ keywords   = ["ecdsa", "rsa", "piv", "pcsc", "yubikey"]
 
 [dependencies]
 gumdrop = "0.8"
-env_logger = "0.7"
+env_logger = "0.8"
 lazy_static = "1"
 log = "0.4"
 sha2 = "0.8"