build(deps): Bump org.openrewrite.recipe:rewrite-testing-frameworks

Bumps [org.openrewrite.recipe:rewrite-testing-frameworks](https://github.com/openrewrite/rewrite-testing-frameworks) from 3.20.0 to 3.21.0.
- [Release notes](https://github.com/openrewrite/rewrite-testing-frameworks/releases)
- [Commits](openrewrite/rewrite-testing-frameworks@v3.20.0...v3.21.0)

---
updated-dependencies:
- dependency-name: org.openrewrite.recipe:rewrite-testing-frameworks
  dependency-version: 3.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -201,7 +201,7 @@
     <jacoco-maven-plugin.version>0.8.14</jacoco-maven-plugin.version>
     <easy-jacoco-maven-plugin.version>0.1.4</easy-jacoco-maven-plugin.version>
     <rewrite-maven-plugin.version>6.22.1</rewrite-maven-plugin.version>
-    <rewrite-testing-frameworks.version>3.20.0</rewrite-testing-frameworks.version>
+    <rewrite-testing-frameworks.version>3.21.0</rewrite-testing-frameworks.version>
     <rewrite-migrate-java.version>3.20.0</rewrite-migrate-java.version>
     <java18-signature.version>1.0</java18-signature.version>