fix(Build): pom update

Author: Gilles Grousset

pom.xml

@@ -1,12 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
     <modelVersion>4.0.0</modelVersion>
-
-    <parent>
-        <groupId>org.sonarsource.parent</groupId>
-        <artifactId>parent</artifactId>
-        <version>59.0.29</version>
-    </parent>
 
     <groupId>fr.insideapp.sonarqube</groupId>
     <artifactId>sonar-flutter</artifactId>
@@ -49,24 +43,27 @@
         <developerConnection>scm:git:[email protected]:insideapp-oss/sonar-flutter.git</developerConnection>
         <url>https://github.com/insideapp-oss/sonar-flutter</url>
       <tag>HEAD</tag>
-  </scm>
+    </scm>
 
     <properties>
         <license.owner>inside|app</license.owner>
         <license.title>SonarQube Flutter Plugin</license.title>
         <license.mailto>[email protected]</license.mailto>
 
         <maven.test.redirectTestOutputToFile>true</maven.test.redirectTestOutputToFile>
+        <jdk.min.version>1.9</jdk.min.version>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+
+        <sonar.version>6.7</sonar.version>
+        <sonar-orchestrator.version>3.22.0.1791</sonar-orchestrator.version>
+        <sonarlint.version>4.0.0.2052</sonarlint.version>
 
         <assertj.version>3.5.2</assertj.version>
         <guava.version>17.0</guava.version>
         <junit.version>4.10</junit.version>
         <logback.version>1.0.13</logback.version>
         <mockito.version>1.9.0</mockito.version>
         <slf4j.version>1.7.21</slf4j.version>
-        <sonar.version>6.7</sonar.version>
-        <sonar-orchestrator.version>3.22.0.1791</sonar-orchestrator.version>
-        <sonarlint.version>4.0.0.2052</sonarlint.version>
         <sslr.version>1.23</sslr.version>
         <sslr-squid-bridge.version>2.7.1.392</sslr-squid-bridge.version>
         <ant.version>1.6</ant.version>
@@ -199,17 +196,20 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.2</version>
+                <version>3.8.1</version>
                 <configuration>
-                    <source>1.8</source>
-                    <target>1.8</target>
+                    <source>${jdk.min.version}</source>
+                    <target>${jdk.min.version}</target>
+                    <compilerArgs>
+                        <arg>-Xlint</arg>
+                    </compilerArgs>
                 </configuration>
             </plugin>
 
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
-                <version>0.8.2</version>
+                <version>0.8.5</version>
                 <configuration>
                     <excludes>
                         <exclude>**/generated/**</exclude>