fix: checkstyle [macata #99]

Author: DazedNConfused-

checkstyle.xml

@@ -219,4 +219,10 @@
         </module>
         <module name="UnusedImports"/>
     </module>
+
+    <module name="RegexpMultiline">
+        <property name="format" value="(\n\s*){3,}"/>
+        <property name="message" value="Too many consecutive blank lines."/>
+        <property name="severity" value="error"/>
+    </module>
 </module>

src/main/java/com/dazednconfused/catalauncher/database/h2/H2Database.java

@@ -104,7 +104,6 @@ protected static Result<Throwable, Connection> openConnection(String database) {
         ).map(Result::success).recover(Result::failure).get();
     }
 
-
     /**
      * Completely wipes this database of any and all data, <b>including</b> the underlying schema.
      *