build(deps): bump modelixCore from 8.15.3 to 8.15.4

Bumps `modelixCore` from 8.15.3 to 8.15.4.

Updates `org.modelix:model-server` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix:model-server-api` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix:model-client` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix:model-api` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix:model-api-gen-runtime` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix:light-model-client` from 8.15.3 to 8.15.4
- [Release notes](https://github.com/modelix/modelix.core/releases)
- [Changelog](https://github.com/modelix/modelix.core/blob/main/.releaserc.json)
- [Commits](modelix/modelix.core@8.15.3...8.15.4)

Updates `org.modelix.model-api-gen` from 8.15.3 to 8.15.4

---
updated-dependencies:
- dependency-name: org.modelix:model-server
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix:model-server-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix:model-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix:model-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix:model-api-gen-runtime
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix:light-model-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.modelix.model-api-gen
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -14,7 +14,7 @@ mpsGradlePlugin = "1.7.288.4ea765f"
 # * mps/metamodel-api-ts/package.json
 # * spa-management-vue/package.json
 # * spa-overview-angular/package.json
-modelixCore = "8.15.3"
+modelixCore = "8.15.4"
 mpsModelServerSyncPlugin = "2021.2.157"
 
 # backend 1 / SPA