Update spring boot to v4

Author: renovate[bot]

pom.xml

@@ -6,7 +6,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>3.5.3</version>
+		<version>4.1.0</version>
 		<relativePath/>
 	</parent>
 	<groupId>pl.piomin.samples</groupId>

sample-app-kickstart/pom.xml

@@ -6,7 +6,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.2.10</version>
+        <version>4.1.0</version>
         <relativePath/>
     </parent>
     <artifactId>sample-app-kickstart</artifactId>

sample-app-spring-graphql/pom.xml

@@ -5,7 +5,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>3.5.3</version>
+        <version>4.1.0</version>
         <relativePath/>
     </parent>
     <modelVersion>4.0.0</modelVersion>