fix: fix junit; update version

Author: JoaoFSCruz

README.md

@@ -118,12 +118,12 @@ Using Maven:
     <dependency>
       <groupId>com.mailersend</groupId>
       <artifactId>java-sdk</artifactId>
-      <version>1.2.1</version>
+      <version>1.3.0</version>
     </dependency>
 
 Using Gradle:
 
-    implementation 'com.mailersend:java-sdk:1.2.1'
+    implementation 'com.mailersend:java-sdk:1.3.0'
 
 # Usage
 

pom.xml

@@ -2,7 +2,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>com.mailersend</groupId>
 	<artifactId>java-sdk</artifactId>
-	<version>1.2.1</version>
+	<version>1.3.0</version>
 	<name>MailerSend Java SDK</name>
 	<description>An SDK for MailerSend API</description>
 	<url>https://github.com/mailersend/mailersend-java</url>
@@ -39,14 +39,14 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.22.2</version>
+				<version>3.0.0</version>
 				<configuration>
 					<testFailureIgnore>true</testFailureIgnore>
 				</configuration>
 			</plugin>
 			<plugin>
 				<artifactId>maven-failsafe-plugin</artifactId>
-				<version>2.22.2</version>
+				<version>3.0.0</version>
 			</plugin>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
@@ -132,6 +132,12 @@
 			<version>5.13.3</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.junit.platform</groupId>
+			<artifactId>junit-platform-launcher</artifactId>
+			<version>1.13.3</version>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>com.google.code.gson</groupId>
 			<artifactId>gson</artifactId>