Bump org.springframework:spring-core

Bumps [org.springframework:spring-core](https://github.com/spring-projects/spring-framework) from 5.1.20.RELEASE to 5.2.24.RELEASE.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.1.20.RELEASE...v5.2.24.RELEASE)

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

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

Author: dependabot[bot]

pom.xml

@@ -12,7 +12,7 @@
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
         <java.version>1.8</java.version>
         <jackson.version>2.15.2</jackson.version>
-        <spring.version>5.1.20.RELEASE</spring.version>
+        <spring.version>5.2.24.RELEASE</spring.version>
         <resilience4j.version>1.7.0</resilience4j.version>
         <quasar.version>0.8.0</quasar.version>
         <kcp-tool.version>1.0.7</kcp-tool.version>