Update Maven dependency versions

.mvn/wrapper/maven-wrapper.properties

@@ -1 +1 @@
-distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.5.4/apache-maven-3.5.4-bin.zip
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.0/apache-maven-3.6.0-bin.zip

buildhelper/Java6to2.java

@@ -54,7 +54,7 @@ public class Java6to2 implements Opcodes {
     private static byte[] transform(InputStream classfile) throws IOException {
         ClassReader cr = new ClassReader(classfile);
         ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
-        ClassVisitor cv = new ClassVisitor(ASM6, cw) {
+        ClassVisitor cv = new ClassVisitor(ASM7, cw) {
             String internalName;
             boolean classLookupMethodGenerated;
             Set fieldsGenerated = new HashSet();
@@ -96,7 +96,7 @@ void generateSyntheticClassLookupMethod() {
             public MethodVisitor visitMethod(int access, String name, String desc, String signature, String[] exceptions) {
                 MethodVisitor mv = super.visitMethod(access, name, desc, signature, exceptions);
                 final ClassVisitor cv = this.cv;
-                return new MethodVisitor(ASM6, mv) {
+                return new MethodVisitor(ASM7, mv) {
                     /**
                      * Intercepts class instantiations to see whether they instantiate a StringBuilder. Those instructions were generated by javac for string concatenations. But
                      * StringBuilder is not available on JRE1.2, so we just replace it with StringBuffer.

pom.xml

@@ -49,14 +49,14 @@
 		<maven-antrun-plugin.version>1.8</maven-antrun-plugin.version>
 		<maven-javadoc-plugin.version>3.0.1</maven-javadoc-plugin.version>
 		<maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
-		<maven-deploy-plugin.version>2.8.2</maven-deploy-plugin.version>
+		<maven-deploy-plugin.version>3.0.0-M1</maven-deploy-plugin.version>
 		<maven-resources-plugin.version>3.1.0</maven-resources-plugin.version>
 		<maven-jar-plugin.version>3.1.0</maven-jar-plugin.version>
 		<maven-source-plugin.version>3.0.1</maven-source-plugin.version>
 		<buildnumber-maven-plugin.version>1.4</buildnumber-maven-plugin.version>
 		<nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
 		<httpclient.version>4.5.6</httpclient.version>
-		<asm.version>6.2.1</asm.version>
+		<asm.version>7.0</asm.version>
 		<gwt-user.version>2.5.0</gwt-user.version>
 		<junit.version>3.8.2</junit.version>
 		<jcp.version>6.1.4</jcp.version>