Bump org.springframework:spring-core from 6.0.8 to 6.0.15 in /redisson

Bumps [org.springframework:spring-core](https://github.com/spring-projects/spring-framework) from 6.0.8 to 6.0.15.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v6.0.8...v6.0.15)

---
updated-dependencies:
- dependency-name: org.springframework:spring-core
  dependency-type: direct:production
...

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

redisson/pom.xml

@@ -174,7 +174,7 @@
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
             <!-- 4.1+ -->
-            <version>6.0.8</version>
+            <version>6.0.15</version>
             <scope>provided</scope>
         </dependency>
         <dependency>