Update versions in the samples

See gh-171

Author: wilkinsona

samples/spring-javaformat-gradle-sample/build.gradle

@@ -21,7 +21,7 @@ repositories {
 }
 
 checkstyle {
-	toolVersion = "8.18"
+	toolVersion = "8.29"
 }
 
 dependencies {

samples/spring-javaformat-maven-sample/pom.xml

@@ -32,12 +32,12 @@
 					<dependency>
 						<groupId>com.puppycrawl.tools</groupId>
 						<artifactId>checkstyle</artifactId>
-						<version>8.18</version>
+						<version>8.29</version>
 					</dependency>
 					<dependency>
 						<groupId>io.spring.javaformat</groupId>
 						<artifactId>spring-javaformat-checkstyle</artifactId>
-						<version>0.0.7-SNAPSHOT</version>
+						<version>0.0.20-SNAPSHOT</version>
 					</dependency>
 				</dependencies>
 				<executions>