Bump org.springframework.boot:spring-boot-dependencies

Bumps [org.springframework.boot:spring-boot-dependencies](https://github.com/spring-projects/spring-boot) from 3.4.2 to 3.4.3.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](https://github.com/spring-projects/spring-boot/compare/v3.4.2...v3.4.3)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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dependencies.gradle

@@ -1,5 +1,5 @@
 ext {
-    springBootVersion = '3.4.2'
+    springBootVersion = '3.4.3'
     springCloudAwsVersion = '3.2.1'
 
     debeziumVersion = '3.0.7.Final'