Bump io.projectreactor:reactor-core in /server/api-service

Bumps [io.projectreactor:reactor-core](https://github.com/reactor/reactor-core) from 3.4.29 to 3.6.4.
- [Release notes](https://github.com/reactor/reactor-core/releases)
- [Commits](reactor/reactor-core@v3.4.29...v3.6.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

server/api-service/lowcoder-dependencies/pom.xml

@@ -128,7 +128,7 @@
 			<dependency>
 				<groupId>io.projectreactor</groupId>
 				<artifactId>reactor-core</artifactId>
-				<version>3.4.29</version>
+				<version>3.6.4</version>
 			</dependency>
 
 			<dependency>