update »Spring Boot« to 4.0.0

Author: agebhar1

pom.xml

@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.5.7</version>
+		<version>4.0.0</version>
 		<relativePath /> <!-- lookup parent from repository -->
 	</parent>
 
@@ -54,10 +54,6 @@
 			<groupId>org.jetbrains.kotlin</groupId>
 			<artifactId>kotlin-reflect</artifactId>
 		</dependency>
-		<dependency>
-			<groupId>org.jetbrains.kotlin</groupId>
-			<artifactId>kotlin-stdlib-jdk8</artifactId>
-		</dependency>
 		<dependency>
 			<groupId>eu.maxschuster</groupId>
 			<artifactId>dataurl</artifactId>