fix(deps): update spring boot to v3.5.6

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This PR contains the following updates:

Package	Change	Age	Confidence
org.springframework.boot:spring-boot-maven-plugin (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-test (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-web (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-security (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-oauth2-client (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-oauth2-resource-server (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-actuator (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-validation (source)	3.5.5 -> 3.5.6
org.springframework.boot:spring-boot-starter-parent (source)	3.5.5 -> 3.5.6

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Release Notes

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

v3.5.6

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