Bump org.springframework:spring-core from 6.0.11 to 6.0.15

Bumps [org.springframework:spring-core](https://github.com/spring-projects/spring-framework) from 6.0.11 to 6.0.15.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v6.0.11...v6.0.15)

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

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

pom.xml

@@ -113,7 +113,7 @@
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-core</artifactId>
-        <version>6.0.11</version>
+        <version>6.0.15</version>
       </dependency>
       <dependency>
         <groupId>org.springframework</groupId>