Merge pull request #63 from serverless-java-in-action/dependabot/maven/chapter4/knative-springboot/org.springframework.boot-spring-boot-starter-parent-4.0.3

Bump org.springframework.boot:spring-boot-starter-parent from 3.2.2 to 4.0.3 in /chapter4/knative-springboot

Author: danieloh30

chapter4/knative-springboot/pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.4.1</version>
+    <version>4.0.4</version>
     <relativePath/>
   </parent>
   <groupId>com.example.events</groupId>