deps: Update checkstyle from 12.0.1 to 12.3.0 (#317)

* deps: Update checkstyle from 12.0.1 to 12.3.0

* style: Fix comment spacing

Author: leviem1

build.gradle

@@ -86,7 +86,7 @@ processResources {
 }
 
 checkstyle {
-    toolVersion = '12.0.1'
+    toolVersion = '12.3.0'
     maxWarnings = 0
 }
 

config/checkstyle/checkstyle.xml

@@ -200,12 +200,14 @@
     <module name="FallThrough"/>
     <module name="UpperEll"/>
     <module name="ModifierOrder"/>
+    <module name="TextBlockGoogleStyleFormatting"/>
     <module name="EmptyLineSeparator">
       <property name="tokens"
                value="PACKAGE_DEF, IMPORT, STATIC_IMPORT, CLASS_DEF, INTERFACE_DEF, ENUM_DEF,
                     STATIC_INIT, INSTANCE_INIT, METHOD_DEF, CTOR_DEF, VARIABLE_DEF, RECORD_DEF,
                     COMPACT_CTOR_DEF"/>
       <property name="allowNoEmptyLineBetweenFields" value="true"/>
+      <property name="allowMultipleEmptyLines" value="false"/>
     </module>
     <module name="SeparatorWrap">
       <property name="id" value="SeparatorWrapDot"/>
@@ -263,22 +265,22 @@
              value="Parameter name ''{0}'' must match pattern ''{1}''."/>
     </module>
     <module name="LambdaParameterName">
-      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <property name="format" value="^(_|[a-z]([a-z0-9][a-zA-Z0-9]*)?)$"/>
       <message key="name.invalidPattern"
              value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
     </module>
     <module name="CatchParameterName">
-      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <property name="format" value="^(_|[a-z]([a-z0-9][a-zA-Z0-9]*)?)$"/>
       <message key="name.invalidPattern"
              value="Catch parameter name ''{0}'' must match pattern ''{1}''."/>
     </module>
     <module name="LocalVariableName">
-      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <property name="format" value="^(_|[a-z]([a-z0-9][a-zA-Z0-9]*)?)$"/>
       <message key="name.invalidPattern"
              value="Local variable name ''{0}'' must match pattern ''{1}''."/>
     </module>
     <module name="PatternVariableName">
-      <property name="format" value="^[a-z]([a-z0-9][a-zA-Z0-9]*)?$"/>
+      <property name="format" value="^(_|[a-z]([a-z0-9][a-zA-Z0-9]*)?)$"/>
       <message key="name.invalidPattern"
              value="Pattern variable name ''{0}'' must match pattern ''{1}''."/>
     </module>

src/main/java/com/crimsonwarpedcraft/exampleplugin/ExamplePlugin.java

@@ -3,7 +3,6 @@
 import io.papermc.lib.PaperLib;
 import org.bukkit.plugin.java.JavaPlugin;
 
-
 /**
  * Created by Levi Muniz on 7/29/20.
  *