build(deps): bump spring-boot.version from 3.5.6 to 3.5.7 in /example

Bumps `spring-boot.version` from 3.5.6 to 3.5.7.

Updates `org.springframework.boot:spring-boot-dependencies` from 3.5.6 to 3.5.7
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.6...v3.5.7)

Updates `org.springframework.boot:spring-boot-maven-plugin` from 3.5.6 to 3.5.7
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.6...v3.5.7)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 3.5.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-maven-plugin
  dependency-version: 3.5.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

example/pom.xml

@@ -13,7 +13,7 @@
     <maven.compiler.source>${java.version}</maven.compiler.source>
     <maven.compiler.target>${java.version}</maven.compiler.target>
     <junit-jupiter.version>6.0.0</junit-jupiter.version>
-    <spring-boot.version>3.5.6</spring-boot.version>
+    <spring-boot.version>3.5.7</spring-boot.version>
     <cucumber.version>7.30.0</cucumber.version>
     <springdoc-openapi-starter.version>2.8.13</springdoc-openapi-starter.version>
     <pre-liquibase.version>1.6.1</pre-liquibase.version>