Bump springBootVersion from 2.7.2 to 2.7.3
Bump springBootVersion from 2.7.2 to 2.7.3

Bumps `springBootVersion` from 2.7.2 to 2.7.3.

Updates `spring-boot-starter` from 2.7.2 to 2.7.3
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v2.7.2...v2.7.3)

Updates `spring-boot-configuration-processor` from 2.7.2 to 2.7.3
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v2.7.2...v2.7.3)

Updates `spring-boot-starter-test` from 2.7.2 to 2.7.3
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v2.7.2...v2.7.3)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-configuration-processor
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-starter-test
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
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