feat: #94 Allow Java 17 on tests only

Signed-off-by: Laurent Broudoux <laurent.broudoux@gmail.com>

pom.xml

@@ -54,6 +54,7 @@
     <sonar.organization>microcks</sonar.organization>
     <sonar.host.url>https://sonarcloud.io</sonar.host.url>
     <java.version>8</java.version>
+    <test.java.version>17</test.java.version>
     <testcontainers.version>1.20.1</testcontainers.version>
     <jupiter.version>5.8.1</jupiter.version>
     <rest-assured.version>5.3.1</rest-assured.version>
@@ -189,13 +190,15 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-compiler-plugin</artifactId>
-        <version>3.1</version>
+        <version>3.5.1</version>
         <configuration>
           <source>${java.version}</source>
           <target>${java.version}</target>
           <encoding>${project.build.sourceEncoding}</encoding>
           <compilerArgument>-Xlint:deprecation</compilerArgument>
           <compilerArgument>-Xlint:unchecked</compilerArgument>
+          <testSource>${test.java.version}</testSource>
+          <testTarget>${test.java.version}</testTarget>
         </configuration>
       </plugin>
     </plugins>