Bump org.springframework.boot from 3.3.3 to 3.3.4 (#78)

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.3.3 to 3.3.4.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.3.3...v3.3.4)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

reference-app/build.gradle.kts

@@ -1,5 +1,5 @@
 plugins {
-    id("org.springframework.boot") version "3.3.3"
+    id("org.springframework.boot") version "3.3.4"
     id("project.java-conventions")
 }