Bump io.projectreactor:reactor-core from 3.5.8 to 3.5.9 (#1260)

Bumps [io.projectreactor:reactor-core](https://github.com/reactor/reactor-core) from 3.5.8 to 3.5.9.
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](reactor/reactor-core@v3.5.8...v3.5.9)

---
updated-dependencies:
- dependency-name: io.projectreactor:reactor-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -62,7 +62,7 @@
 		<spring.security.version>6.1.2</spring.security.version>
 		<spring.security.oauth2.version>2.5.2.RELEASE</spring.security.oauth2.version>
 		<spring.security.jwt.version>1.1.1.RELEASE</spring.security.jwt.version>
-		<reactor.version>3.5.8</reactor.version>
+		<reactor.version>3.5.9</reactor.version>
 		<log4j2.version>2.20.0</log4j2.version>
 		<slf4j.api.version>2.0.7</slf4j.api.version> <!--see also here http://www.slf4j.org/faq.html#changesInVersion18 -->
 		<org.json.version>20230618</org.json.version>