Bump org.springframework.boot:spring-boot-starter-parent

Bumps [org.springframework.boot:spring-boot-starter-parent](https://github.com/spring-projects/spring-boot) from 2.7.18 to 3.3.4.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.18...v3.3.4)

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

Signed-off-by: dependabot[bot] <[email protected]>

yoti-sdk-spring-boot-example/pom.xml

@@ -11,7 +11,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.7.18</version>
+    <version>3.3.4</version>
     <relativePath /> <!-- lookup parent from repository -->
   </parent>