Bump the dev-dependencies group with 4 updates

Bumps the dev-dependencies group with 4 updates: [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit), [shipmonk/composer-dependency-analyser](https://github.com/shipmonk-rnd/composer-dependency-analyser), [shipmonk/name-collision-detector](https://github.com/shipmonk-rnd/name-collision-detector) and [slevomat/coding-standard](https://github.com/slevomat/coding-standard).


Updates `phpunit/phpunit` from 9.6.17 to 9.6.18
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/9.6.18/ChangeLog-9.6.md)
- [Commits](sebastianbergmann/phpunit@9.6.17...9.6.18)

Updates `shipmonk/composer-dependency-analyser` from 1.3.0 to 1.4.0
- [Release notes](https://github.com/shipmonk-rnd/composer-dependency-analyser/releases)
- [Commits](shipmonk-rnd/composer-dependency-analyser@1.3.0...1.4.0)

Updates `shipmonk/name-collision-detector` from 2.1.0 to 2.1.1
- [Release notes](https://github.com/shipmonk-rnd/name-collision-detector/releases)
- [Commits](shipmonk-rnd/name-collision-detector@2.1.0...2.1.1)

Updates `slevomat/coding-standard` from 8.14.1 to 8.15.0
- [Release notes](https://github.com/slevomat/coding-standard/releases)
- [Commits](slevomat/coding-standard@8.14.1...8.15.0)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: shipmonk/composer-dependency-analyser
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: shipmonk/name-collision-detector
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: slevomat/coding-standard
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

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