Bump spring.version from 5.2.7.RELEASE to 5.2.8.RELEASE in /core
Bump spring.version from 5.2.7.RELEASE to 5.2.8.RELEASE in /core

Bumps `spring.version` from 5.2.7.RELEASE to 5.2.8.RELEASE.

Updates `spring-core` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-web` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-orm` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-jdbc` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-tx` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-context` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-context-support` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-test` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-aop` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

Updates `spring-aspects` from 5.2.7.RELEASE to 5.2.8.RELEASE
- [Release notes](https://github.com/spring-projects/spring-framework/releases)
- [Commits](https://github.com/spring-projects/spring-framework/compare/v5.2.7.RELEASE...v5.2.8.RELEASE)

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

Closes #96

Change-Id: I5b1d2c8ff8602c66b60eb68c3a759adad1708094

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