Bump io.projectreactor:reactor-core from 3.5.1 to 3.6.11 (#677)

Bumps [io.projectreactor:reactor-core](https://github.com/reactor/reactor-core) from 3.5.1 to 3.6.11.
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](reactor/reactor-core@v3.5.1...v3.6.11)

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

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

Author: dependabot[bot]

examples/restful-ws-microprofile-liberty/pom.xml

@@ -51,7 +51,7 @@
         <dependency>
             <groupId>io.projectreactor</groupId>
             <artifactId>reactor-core</artifactId>
-            <version>3.5.1</version>
+            <version>3.6.11</version>
         </dependency>
     </dependencies>