Update spring boot to v3.5.16

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
org.springframework.boot:spring-boot-starter-test (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-devtools (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-validation (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-json (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-web (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-security (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-data-jpa (source)	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-starter-actuator (source)	3.5.15 → 3.5.16
org.springframework.boot	3.5.15 → 3.5.16
org.springframework.boot:spring-boot-gradle-plugin (source)	3.5.15 → 3.5.16

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Release Notes

spring-projects/spring-boot (org.springframework.boot:spring-boot-starter-test)

v3.5.16

🔨 Dependency Upgrades

• Upgrade to Spring AMQP 3.2.12 #​50818
• Upgrade to Spring Data Bom 2025.0.13 #​50819
• Upgrade to Spring Integration 6.5.10 #​50820

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