docs(release): prepare 0.14.0 changelog updates (#650) #1253

Job	Run time
Build Examples (Spring Boot Memory Leak, examples/spring-boot-memory-leak-demo, package)	43s
Build Examples (Maven, examples/maven-demo, verify)	36s
Pre-commit	23s
Build Examples (Spring Boot, examples/spring-boot-demo/implementation, verify -Pjacoco)	1m 14s
Build Examples (Spring Boot Performance Bottleneck, examples/spring-boot-performance-bottleneck-d...	34s
Validate Agent Skills	14s
Validate Markdown Files	27s
	4m 11s

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