Bump miow in /code-samples/serving/cloudevents/cloudevents-rust (#5024)

Bumps [miow](https://github.com/yoshuawuyts/miow) from 0.2.1 to 0.2.2.
- [Release notes](https://github.com/yoshuawuyts/miow/releases)
- [Changelog](https://github.com/yoshuawuyts/miow/blob/master/CHANGELOG.md)
- [Commits](https://github.com/yoshuawuyts/miow/compare/0.2.1...0.2.2)

---
updated-dependencies:
- dependency-name: miow
  dependency-type: indirect
...

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

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

code-samples/serving/cloudevents/cloudevents-rust/Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "actix-codec"
 version = "0.2.0"
@@ -1199,9 +1201,9 @@ dependencies = [
 
 [[package]]
 name = "miow"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c1f2f3b1cf331de6896aabf6e9d55dca90356cc9960cca7eaaf408a355ae919"
+checksum = "ebd808424166322d4a38da87083bfddd3ac4c131334ed55856112eb06d46944d"
 dependencies = [
  "kernel32-sys",
  "net2",
@@ -1211,9 +1213,9 @@ dependencies = [
 
 [[package]]
 name = "net2"
-version = "0.2.34"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2ba7c918ac76704fb42afcbbb43891e72731f3dcca3bef2a19786297baf14af7"
+checksum = "391630d12b68002ae1e25e8f974306474966550ad82dac6886fb8910c19568ae"
 dependencies = [
  "cfg-if",
  "libc",