Chore(deps): Bump org.springframework.boot:spring-boot-starter-parent from 3.4.2 to 3.4.3 in /examples/webflux-undertow-java

Chore(deps): Bump org.springframework.boot:spring-boot-starter-parent from 3.4.2 to 3.4.3 in /examples/webflux-undertow-java #1680