Upgrade to GraalVM 21.1.0

This commit upgrades the native-image-maven-plugin
version in the sample parent pom.

See gh-578

Author: sdeleuze

samples/maven-parent/pom.xml

@@ -71,7 +71,7 @@
 				<plugin>
 					<groupId>org.graalvm.nativeimage</groupId>
 					<artifactId>native-image-maven-plugin</artifactId>
-					<version>21.0.0.2</version>
+					<version>21.1.0</version>
 					<configuration>
 						<mainClass>${main.class}</mainClass>
 						<imageName>${project.artifactId}</imageName>