Bump io.projectreactor:reactor-core in /pgp-keys-map-test1

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] <support@github.com>

pgp-keys-map-test1/pom.xml

@@ -332,7 +332,7 @@
         <dependency>
             <groupId>io.projectreactor</groupId>
             <artifactId>reactor-core</artifactId>
-            <version>[3.5.8]</version>
+            <version>[3.5.9]</version>
         </dependency>
         <dependency>
             <groupId>io.projectreactor.netty</groupId>