chore(deps): update spring boot to v3.3.4 (release/7.21)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.springframework.boot:spring-boot-maven-plugin (source)	3.3.3 -> 3.3.4
org.springframework.boot:spring-boot-dependencies (source)	3.3.3 -> 3.3.4

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Release Notes

spring-projects/spring-boot (org.springframework.boot:spring-boot-maven-plugin)

### [`v3.3.4`](https://redirect.github.com/spring-projects/spring-boot/compare/v3.3.3...v3.3.4) [Compare Source](https://redirect.github.com/spring-projects/spring-boot/compare/v3.3.3...v3.3.4)

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