Bump intl from 0.17.0 to 0.18.0

Bumps [intl](https://github.com/dart-lang/intl) from 0.17.0 to 0.18.0.
- [Release notes](https://github.com/dart-lang/intl/releases)
- [Changelog](https://github.com/dart-lang/intl/blob/master/CHANGELOG.md)
- [Commits](https://github.com/dart-lang/intl/commits)

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

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

pubspec.lock

@@ -402,7 +402,7 @@ packages:
       name: intl
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.17.0"
+    version: "0.18.0"
   io:
     dependency: transitive
     description:

pubspec.yaml

@@ -47,7 +47,7 @@ dependencies:
   path: ^1.8.2
   provider: ^6.0.4
   tuple: ^2.0.1
-  intl: ^0.17.0
+  intl: ^0.18.0
   device_info_plus: ^8.0.0
   meta: ^1.8.0
   flutter_markdown: ^0.6.13