Add changelog entry for Spring Boot 4 bump #6057

Job	Run time
system-test (sentry-samples-spring-boot, false, true)	2m 8s
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	5m 2s
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	1m 53s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	5m 42s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	5m 27s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	5m 10s
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	5m 11s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	5m 38s
system-test (sentry-samples-console, false, true)	53s
system-test (sentry-samples-spring-boot-webflux, false, true)	1m 56s
system-test (sentry-samples-spring-boot-jakarta, false, true)	4m 45s
system-test (sentry-samples-logback, false, true)	1m 0s
system-test (sentry-samples-log4j2, false, true)	57s
system-test (sentry-samples-jul, false, true)	56s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	5m 10s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	5m 7s
system-test (sentry-samples-spring-boot-4, false, true)	1m 58s
system-test (sentry-samples-spring, false, true)	1m 32s
system-test (sentry-samples-spring-7, false, true)	1m 39s
system-test (sentry-samples-spring-jakarta, false, true)	1m 28s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	1m 58s
	1h 5m 30s

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