Bump spring.version from 5.3.6 to 5.3.7 in /core
Bump spring.version from 5.3.6 to 5.3.7 in /core

Bumps `spring.version` from 5.3.6 to 5.3.7.

Updates `spring-core` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-web` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-orm` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-jdbc` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-tx` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-context` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-context-support` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-test` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-aop` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

Updates `spring-aspects` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.3.6...v5.3.7)

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

Closes #189

Change-Id: If3ade73ae94e9bccdfa7e01876e65b2a89958386

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