Update dependency org.springframework.boot:spring-boot-starter-parent…

… to v2.7.1

pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.6.7</version>
+		<version>2.7.1</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>io.jonashackt</groupId>