Bump io.projectreactor:reactor-core in the github-dependencies group

Bumps the github-dependencies group with 1 update: [io.projectreactor:reactor-core](https://github.com/reactor/reactor-core).


Updates `io.projectreactor:reactor-core` from 3.7.2 to 3.7.3
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](reactor/reactor-core@v3.7.2...v3.7.3)

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

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

pom.xml

@@ -59,7 +59,7 @@
         <extension.springcloud.version>4.11.0</extension.springcloud.version>
         <extension.tracing.version>4.11.0</extension.tracing.version>
 
-        <projectreactor.version>3.7.2</projectreactor.version>
+        <projectreactor.version>3.7.3</projectreactor.version>
 
         <bom-helper.version>0.4.0</bom-helper.version>
         <maven-clean.version>3.4.0</maven-clean.version>