Loosen Checkstyle rules for this.

config/checkstyle/checkstyle.xml

@@ -29,13 +29,13 @@
 
   <module name="TreeWalker">
     <module name="OuterTypeFilename"/>
-    <module name="IllegalTokenText">
+    <!-- <module name="IllegalTokenText">
       <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>
       <property name="format"
         value="\\u00(09|0(a|A)|0(c|C)|0(d|D)|22|27|5(C|c))|\\(0(10|11|12|14|15|42|47)|134)"/>
       <property name="message"
         value="Consider using special escape sequence instead of octal value or Unicode escaped value."/>
-    </module>
+    </module> -->
     <module name="AvoidEscapedUnicodeCharacters">
       <property name="allowEscapesForControlCharacters" value="true"/>
       <property name="allowByTailComment" value="true"/>

proxy/src/main/java/com/velocitypowered/proxy/config/AnnotatedConfig.java

@@ -26,10 +26,8 @@ import org.apache.logging.log4j.Logger;
 public abstract class AnnotatedConfig {
 
   private static final Logger logger = LogManager.getLogger(AnnotatedConfig.class);
-  @SuppressWarnings("checkstyle:IllegalTokenText") // Need to follow the TOML spec exactly
-  private static final Pattern STRING_NEEDS_ESCAPE = Pattern.compile(
-      "(\"|\\\\|[\\u0000-\\u0008]|[\\u000a-\\u001f]|\\u007f)"
-  );
+  private static final Pattern STRING_NEEDS_ESCAPE
+      = Pattern.compile("(\"|\\\\|[\\u0000-\\u0008]|[\\u000a-\\u001f]|\\u007f)");
 
   public static Logger getLogger() {
     return logger;