fix: source encoding

Author: Guilherme Biff Zarelli

pom.xml

@@ -9,8 +9,12 @@
     <version>1.0.0</version>
 
     <properties>
+        <!-- Java -->
+        <java.version>11</java.version>
         <maven.compiler.source>11</maven.compiler.source>
         <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
         <junit-jupiter.version>5.8.2</junit-jupiter.version>
         <assertj.version>3.23.1</assertj.version>