fix maven examples

Author: jenschude

examples/maven-okhttp3/pom.xml

@@ -11,9 +11,10 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
             <plugin>

examples/maven-okhttp3/src/test/java/com/commercetools/sdk/examples/GettingStarted.java renamed to examples/maven-okhttp3/src/test/java/com/commercetools/sdk/examples/GettingStartedTests.java

@@ -10,7 +10,7 @@
 
 import java.util.Optional;
 
-public class GettingStarted {
+public class GettingStartedTests {
 
     @Test
     public void project() {

examples/maven-okhttp4/pom.xml

@@ -11,9 +11,10 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
             <plugin>

examples/maven-okhttp4/src/test/java/com/commercetools/sdk/examples/GettingStarted.java renamed to examples/maven-okhttp4/src/test/java/com/commercetools/sdk/examples/GettingStartedTests.java

@@ -10,7 +10,7 @@
 
 import java.util.Optional;
 
-public class GettingStarted {
+public class GettingStartedTests {
 
     @Test
     public void project() {

examples/split-packages/pom.xml

@@ -11,9 +11,10 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
                 <configuration>
-                    <source>8</source>
-                    <target>8</target>
+                    <source>11</source>
+                    <target>11</target>
                 </configuration>
             </plugin>
             <plugin>

examples/split-packages/src/test/java/com/commercetools/sdk/examples/GettingStarted.java renamed to examples/split-packages/src/test/java/com/commercetools/sdk/examples/GettingStartedTests.java

@@ -10,7 +10,7 @@
 
 import java.util.Optional;
 
-public class GettingStarted {
+public class GettingStartedTests {
 
     @Test
     public void project() {