chore(deps): bump patrol from 3.16.0 to 3.18.0 in /example

Bumps [patrol](https://github.com/leancodepl/patrol/tree/master/packages) from 3.16.0 to 3.18.0.
- [Release notes](https://github.com/leancodepl/patrol/releases)
- [Changelog](https://github.com/leancodepl/patrol/blob/master/docs/patrol-finders-release.mdx)
- [Commits](https://github.com/leancodepl/patrol/commits/patrol-v3.18.0/packages)

---
updated-dependencies:
- dependency-name: patrol
  dependency-version: 3.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

example/pubspec.yaml

@@ -36,7 +36,7 @@ dev_dependencies:
   integration_test:
     sdk: flutter
   meta: any
-  patrol: 3.16.0
+  patrol: 3.19.0
   pub_semver: ^2.1.4
   test_api: any