Set compiler source and target

Author: testower

gbfs-validator-java-api/pom.xml

@@ -26,6 +26,8 @@
     </scm>
     <properties>
         <java.version>17</java.version>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
         <junit.version>5.10.2</junit.version>
         <mockito.version>5.11.0</mockito.version>
         <junit-platform.version>1.10.2</junit-platform.version>
@@ -210,6 +212,17 @@
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
 
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
+                <configuration>
+                    <source>17</source>
+                    <target>17</target>
+                    <release>17</release>
+                </configuration>
+            </plugin>
+
             <!-- Configure Surefire plugin for JUnit 5 -->
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>