Bump custom_lint from 0.5.11 to 0.6.0 in /packages/etebase_flutter

Bumps [custom_lint](https://github.com/invertase/dart_custom_lint) from 0.5.11 to 0.6.0.
- [Commits](invertase/dart_custom_lint@custom_lint-v0.5.11...custom_lint-v0.6.0)

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

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

packages/etebase_flutter/pubspec.yaml

@@ -21,7 +21,7 @@ dependencies:
   plugin_platform_interface: ^2.1.7
 
 dev_dependencies:
-  custom_lint: ^0.5.7
+  custom_lint: ">=0.5.7 <0.7.0"
   dart_pre_commit: ^5.2.1
   dart_test_tools: ^5.5.0