deps: bump spring-boot-starter-parent from 3.0.6 to 3.1.1 (#1976)

Bumps [spring-boot-starter-parent](https://github.com/spring-projects/spring-boot) from 3.0.6 to 3.1.1.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.0.6...v3.1.1)

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

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

spring-cloud-gcp-samples/pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.0.6</version>
+		<version>3.1.1</version>
 		<relativePath/>
 	</parent>