Bump bytes from 0.5.5 to 0.5.6

Bumps [bytes](https://github.com/tokio-rs/bytes) from 0.5.5 to 0.5.6.
- [Release notes](https://github.com/tokio-rs/bytes/releases)
- [Changelog](https://github.com/tokio-rs/bytes/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/bytes/compare/v0.5.5...v0.5.6)

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

Cargo.lock

@@ -236,12 +236,9 @@ checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
 
 [[package]]
 name = "bytes"
-version = "0.5.5"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "118cf036fbb97d0816e3c34b2d7a1e8cfc60f68fcf63d550ddbe9bd5f59c213b"
-dependencies = [
- "loom",
-]
+checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
 
 [[package]]
 name = "canonical-path"
@@ -669,19 +666,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "generator"
-version = "0.6.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "add72f17bb81521258fcc8a7a3245b1e184e916bfbe34f0ea89558f440df5c68"
-dependencies = [
- "cc",
- "libc",
- "log",
- "rustc_version",
- "winapi 0.3.9",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.12.3"
@@ -960,17 +944,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "loom"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ecc775857611e1df29abba5c41355cdf540e7e9d4acfdf0f355eefee82330b7"
-dependencies = [
- "cfg-if",
- "generator",
- "scoped-tls",
-]
-
 [[package]]
 name = "matchers"
 version = "0.0.1"
@@ -1635,12 +1608,6 @@ version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"
 
-[[package]]
-name = "scoped-tls"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "332ffa32bf586782a3efaeb58f127980944bbc8c4d6913a86107ac2a5ab24b28"
-
 [[package]]
 name = "scopeguard"
 version = "1.1.0"