chore(deps): bump com.willowtreeapps.assertk:assertk-jvm

Bumps [com.willowtreeapps.assertk:assertk-jvm](https://github.com/willowtreeapps/assertk) from 0.25 to 0.28.1.
- [Release notes](https://github.com/willowtreeapps/assertk/releases)
- [Changelog](https://github.com/willowtreeapps/assertk/blob/main/CHANGELOG.md)
- [Commits](willowtreeapps/assertk@v0.25...v0.28.1)

---
updated-dependencies:
- dependency-name: com.willowtreeapps.assertk:assertk-jvm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

gradle/libs.versions.toml

@@ -16,7 +16,7 @@ java-driver-core = "4.15.0"
 java-driver-query-builder = "4.17.0"
 jackson-databind = "2.15.3"
 jts-core = "1.19.0"
-assertk-jvm = "0.25"
+assertk-jvm = "0.28.1"
 spring-jdbc = "5.3.23"
 mongodb-driver = "4.9.0"