Bump mockito from 5.4.2 to 5.4.3 in /packages/google_fonts (#511)

Bumps [mockito](https://github.com/dart-lang/mockito) from 5.4.2 to 5.4.3.
- [Release notes](https://github.com/dart-lang/mockito/releases)
- [Changelog](https://github.com/dart-lang/mockito/blob/master/CHANGELOG.md)
- [Commits](dart-lang/mockito@5.4.2...v5.4.3)

---
updated-dependencies:
- dependency-name: mockito
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

packages/google_fonts/pubspec.lock

@@ -343,10 +343,10 @@ packages:
     dependency: "direct dev"
     description:
       name: mockito
-      sha256: "7d5b53bcd556c1bc7ffbe4e4d5a19c3e112b7e925e9e172dd7c6ad0630812616"
+      sha256: "4b693867cee1853c9d1d7ecc1871f27f39b2ef2c13c0d8d8507dfe5bebd8aaf1"
       url: "https://pub.dev"
     source: hosted
-    version: "5.4.2"
+    version: "5.4.3"
   mustache_template:
     dependency: "direct dev"
     description: