chore(deps): bump native_toolchain_c from 0.17.6 to 0.18.0

Bumps [native_toolchain_c](https://github.com/dart-lang/native/tree/main/pkgs) from 0.17.6 to 0.18.0.
- [Release notes](https://github.com/dart-lang/native/releases)
- [Commits](https://github.com/dart-lang/native/commits/native_toolchain_c-v0.18.0/pkgs)

---
updated-dependencies:
- dependency-name: native_toolchain_c
  dependency-version: 0.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packages/win32/pubspec.yaml

@@ -40,7 +40,7 @@ dependencies:
   hooks: ^1.0.0
   logging: ^1.3.0
   meta: ^1.17.0
-  native_toolchain_c: ^0.17.4
+  native_toolchain_c: ^0.18.0
 
 dev_dependencies:
   # Handle command-line arguments for example apps.