cargo: bump bytes from 1.2.0 to 1.2.1

Bumps [bytes](https://github.com/tokio-rs/bytes) from 1.2.0 to 1.2.1.
- [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/commits)

---
updated-dependencies:
- dependency-name: bytes
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -170,9 +170,9 @@ checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
 [[package]]
 name = "bytes"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0b3de4a0c5e67e16066a0715723abd91edc2f9001d09c46e1dca929351e130e"
+checksum = "ec8a7b6a70fde80372154c65702f00a0f56f3e1c36abbc6c440484be248856db"
 
 [[package]]
 name = "cast"

lib/Cargo.toml

@@ -20,7 +20,7 @@ version_check = "0.9.4"
 [dependencies]
 backoff = "0.4.0"
 blake2 = "0.10.4"
-bytes = "1.2.0"
+bytes = "1.2.1"
 byteorder = "1.4.3"
 chrono = "0.4.19"
 config = { version = "0.13.1", features = ["toml"] }