Bump spring.version

Bumps `spring.version` from 4.1.2.RELEASE to 5.2.3.RELEASE.

Updates `spring-core` from 4.1.2.RELEASE to 5.2.3.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v4.1.2.RELEASE...v5.2.3.RELEASE)

Updates `spring-context` from 4.1.2.RELEASE to 5.2.3.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v4.1.2.RELEASE...v5.2.3.RELEASE)

Updates `spring-web` from 4.1.2.RELEASE to 5.2.3.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v4.1.2.RELEASE...v5.2.3.RELEASE)

Updates `spring-webmvc` from 4.1.2.RELEASE to 5.2.3.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v4.1.2.RELEASE...v5.2.3.RELEASE)

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

compass/public/assets/highcharts/exporting-server/java/highcharts-export/pom.xml

@@ -16,7 +16,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<maven.compiler.source>1.7</maven.compiler.source>
 		<maven.compiler.target>1.7</maven.compiler.target>
-		<spring.version>4.1.2.RELEASE</spring.version>
+		<spring.version>5.2.3.RELEASE</spring.version>
 		<maven.build.timestamp.format>yyyyMMddHHmmss</maven.build.timestamp.format>
 		<beanstalk.versionLabel>export-${maven.build.timestamp}</beanstalk.versionLabel>
 	</properties>