Bump itoa from 1.0.17 to 1.0.18 in /src/_bcrypt

Bumps [itoa](https://github.com/dtolnay/itoa) from 1.0.17 to 1.0.18.
- [Release notes](https://github.com/dtolnay/itoa/releases)
- [Commits](https://github.com/dtolnay/itoa/compare/1.0.17...1.0.18)

---
updated-dependencies:
- dependency-name: itoa
  dependency-version: 1.0.18
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

src/_bcrypt/Cargo.lock

@@ -212,9 +212,9 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.17"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
+checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "leb128fmt"