antlr4: Re-generate the code because of the new version

Author: hexaredecimal

src/main/java/org/piccode/antlr4/PiccodeScript.interp

@@ -1,4 +1,4 @@
-// Generated from PiccodeScript.g4 by ANTLR 4.9.3
+// Generated from PiccodeScript.g4 by ANTLR 4.13.1
 
 	package org.piccode.antlr4;
 
@@ -12,6 +12,7 @@
  * which can be extended to create a listener which only needs to handle a subset
  * of the available methods.
  */
+@SuppressWarnings("CheckReturnValue")
 public class PiccodeScriptBaseListener implements PiccodeScriptListener {
 	/**
 	 * {@inheritDoc}

src/main/java/org/piccode/antlr4/PiccodeScriptBaseListener.java

@@ -1,4 +1,4 @@
-// Generated from PiccodeScript.g4 by ANTLR 4.9.3
+// Generated from PiccodeScript.g4 by ANTLR 4.13.1
 
 	package org.piccode.antlr4;
 
@@ -12,6 +12,7 @@
  * @param <T> The return type of the visit operation. Use {@link Void} for
  * operations with no return type.
  */
+@SuppressWarnings("CheckReturnValue")
 public class PiccodeScriptBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements PiccodeScriptVisitor<T> {
 	/**
 	 * {@inheritDoc}

src/main/java/org/piccode/antlr4/PiccodeScriptBaseVisitor.java

@@ -1,4 +1,4 @@
-// Generated from PiccodeScript.g4 by ANTLR 4.9.3
+// Generated from PiccodeScript.g4 by ANTLR 4.13.1
 
 	package org.piccode.antlr4;
 

src/main/java/org/piccode/antlr4/PiccodeScriptLexer.interp

@@ -1,4 +1,4 @@
-// Generated from PiccodeScript.g4 by ANTLR 4.9.3
+// Generated from PiccodeScript.g4 by ANTLR 4.13.1
 
 	package org.piccode.antlr4;