Bump spring-core from 2.5.4 to 5.2.24.RELEASE in /core

Bumps [spring-core](https://github.com/spring-projects/spring-framework) from 2.5.4 to 5.2.24.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/commits/v5.2.24.RELEASE)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/core/pom.xml b/core/pom.xml
index b7ab26f..7be31f8 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -591,7 +591,7 @@
       <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-core</artifactId>
-        <version>2.5.4</version>
+        <version>5.2.24.RELEASE</version>
       </dependency>
       <dependency>
         <groupId>org.springframework</groupId>