build(deps): bump zeroize from 1.7.0 to 1.8.1 (#38)

Bumps [zeroize](https://github.com/RustCrypto/utils) from 1.7.0 to 1.8.1.
- [Commits](RustCrypto/utils@zeroize-v1.7.0...zeroize-v1.8.1)

---
updated-dependencies:
- dependency-name: zeroize
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

dhkem/Cargo.toml

@@ -26,7 +26,7 @@ p256 = { version = "0.13.2", optional = true }
 p384 = { version = "0.13.0", optional = true }
 p521 = { version = "0.13.3", optional = true }
 sm2 = { version = "0.13.3", optional = true }
-zeroize = { version = "1.7.0", optional = true }
+zeroize = { version = "1.8.1", optional = true }
 
 [features]
 default = ["zeroize"]