Bump assertj-core from 3.22.0 to 3.23.1

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.22.0 to 3.23.1.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.22.0...assertj-core-3.23.1)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle.kts

@@ -146,7 +146,7 @@ configure(libs) {
             dependency("org.apache.httpcomponents:httpclient:4.5.13")
             dependency("org.aspectj:aspectjrt:1.9.9.1")
             dependency("org.aspectj:aspectjweaver:1.9.9.1")
-            dependency("org.assertj:assertj-core:3.22.0")
+            dependency("org.assertj:assertj-core:3.23.1")
             dependency("org.codehaus.groovy:groovy-all:2.5.13")
             dependency("org.grpcmock:grpcmock-junit5:0.7.7")
             dependency("org.freemarker:freemarker:2.3.31")