chore(deps): bump assertj-core from 3.20.2 to 3.21.0 (#549)

Bumps [assertj-core](https://github.com/assertj/assertj-core) from 3.20.2 to 3.21.0.
- [Release notes](https://github.com/assertj/assertj-core/releases)
- [Commits](assertj/assertj@assertj-core-3.20.2...assertj-core-3.21.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -49,7 +49,7 @@
         <auto-service.version>1.0</auto-service.version>
         <compile-testing.version>0.19</compile-testing.version>
         <javapoet.version>1.13.0</javapoet.version>
-        <assertj.version>3.20.2</assertj.version>
+        <assertj.version>3.21.0</assertj.version>
         <awaitility.version>4.1.0</awaitility.version>
         <spring-boot.version>2.5.5</spring-boot.version>
         <micrometer-core.version>1.7.4</micrometer-core.version>