Bump org.springframework:spring-core from 5.3.26 to 6.0.15

Bumps [org.springframework:spring-core](https://github.com/spring-projects/spring-framework) from 5.3.26 to 6.0.15.
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](spring-projects/spring-framework@v5.3.26...v6.0.15)

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

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

pom.xml

@@ -18,7 +18,7 @@
 		<protobuf-version>3.19.6</protobuf-version>
 		<junit-jupiter-version>5.6.0</junit-jupiter-version>
 		<slf4j.version>1.7.32</slf4j.version>
-		<spring.version>5.3.26</spring.version>
+		<spring.version>6.0.15</spring.version>
 	</properties>
 
 	<dependencyManagement>