build(deps-dev): update standard requirement from 1.39.1 to 1.39.2

Updates the requirements on [standard](https://github.com/standardrb/standard) to permit the latest version.
- [Release notes](https://github.com/standardrb/standard/releases)
- [Changelog](https://github.com/standardrb/standard/blob/main/CHANGELOG.md)
- [Commits](standardrb/standard@v1.39.1...v1.39.2)

---
updated-dependencies:
- dependency-name: standard
  dependency-type: direct:development
...

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

Gemfile

@@ -24,7 +24,7 @@ group :development do
   gem "simplecov", "= 0.21.2"
 
   # rubocop
-  gem "standard", "1.39.1", require: false
+  gem "standard", "1.39.2", require: false
   gem "rubocop", "1.64.1", require: false
   gem "rubocop-minitest", "0.35.1", require: false
   gem "rubocop-packaging", "0.5.2", require: false