Bump io.projectreactor:reactor-core from 3.6.9 to 3.7.1

Bumps [io.projectreactor:reactor-core](https://github.com/reactor/reactor-core) from 3.6.9 to 3.7.1.
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](reactor/reactor-core@v3.6.9...v3.7.1)

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

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

pom.xml

@@ -294,7 +294,7 @@
             <dependency>
                 <groupId>io.projectreactor</groupId>
                 <artifactId>reactor-core</artifactId>
-                <version>3.6.9</version>
+                <version>3.7.1</version>
             </dependency>
             <dependency>
                 <groupId>io.springfox</groupId>