chore(deps-dev): bump org.assertj:assertj-core in /mongodb-kotlin

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:development
  update-type: version-update:semver-patch
...

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

mongodb-kotlin/pom.xml

@@ -24,7 +24,7 @@
 
         <!-- dependencies-->
         <quarkus.version>3.12.2</quarkus.version>
-        <assertj.version>3.26.0</assertj.version>
+        <assertj.version>3.26.3</assertj.version>
         <kotest.version>5.9.1</kotest.version>
         <quarkus-junit5-mockk.version>3.0.0</quarkus-junit5-mockk.version>
         <mockk.version>1.13.11</mockk.version>