Bump the guide-dependencies-maven group across 2 directories with 1 update

Bumps the guide-dependencies-maven group with 1 update in the /hello-caller directory: [org.springframework.boot:spring-boot-starter-parent](https://github.com/spring-projects/spring-boot).
Bumps the guide-dependencies-maven group with 1 update in the /hello-spring-k8s directory: [org.springframework.boot:spring-boot-starter-parent](https://github.com/spring-projects/spring-boot).


Updates `org.springframework.boot:spring-boot-starter-parent` from 3.3.3 to 3.4.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.3.3...v3.4.0)

Updates `org.springframework.boot:spring-boot-starter-parent` from 3.3.1 to 3.4.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.3.3...v3.4.0)

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

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

Author: dependabot[bot]

hello-caller/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.3.3</version>
+		<version>3.4.0</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>

hello-spring-k8s/pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.3.1</version>
+		<version>3.4.0</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>