Bump org.assertj:assertj-core from 3.26.0 to 3.26.3

Bumps [org.assertj:assertj-core](https://github.com/assertj/assertj) from 3.26.0 to 3.26.3.
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.26.0...assertj-build-3.26.3)

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

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

build.gradle.kts

@@ -164,7 +164,7 @@ configure(libs) {
             dependency("org.apache.httpcomponents.client5:httpclient5:5.3.1")
             dependency("org.aspectj:aspectjrt:${assertJVersion}")
             dependency("org.aspectj:aspectjweaver:${assertJVersion}")
-            dependency("org.assertj:assertj-core:3.26.0")
+            dependency("org.assertj:assertj-core:3.26.3")
             dependency("org.freemarker:freemarker:2.3.33")
             dependency("org.grpcmock:grpcmock-junit5:0.8.0")
             dependency("org.hamcrest:hamcrest:2.2")