Update dependency org.springframework.boot to v3.4.3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ komapper = "5.2.0"
 kotlin = "2.1.10"
 ksp = "2.1.10-1.0.30"
 quarkus = "3.19.0"
-spring-boot = "3.4.2"
+spring-boot = "3.4.3"
 
 [libraries]
 komapper-platform = { module = "org.komapper:komapper-platform", version.ref = "komapper" }