checkstyle.xml: prohibit lambdas, records, and pattern variables

Author: stephengold

config/checkstyle/checkstyle.xml

@@ -246,7 +246,7 @@
                      value="Interface type name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="LambdaParameterName">
-            <property name="format" value="^[a-z]{0,9}$"/>
+            <property name="format" value="^$"/>
             <message key="name.invalidPattern"
                      value="Lambda parameter name ''{0}'' must match pattern ''{1}''."/>
         </module>
@@ -282,17 +282,17 @@
                      value="Parameter name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="PatternVariableName">
-            <property name="format" value="^[a-z]{1,9}$"/>
+            <property name="format" value="^$"/>
             <message key="name.invalidPattern"
                      value="Pattern variable name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="RecordComponentName">
-            <property name="format" value="^[a-z]{1,9}$"/>
+            <property name="format" value="^$"/>
             <message key="name.invalidPattern"
                      value="Record component name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="RecordTypeParameterName">
-            <property name="format" value="(^[A-Z]$)"/>
+            <property name="format" value="^$"/>
             <message key="name.invalidPattern"
                      value="Record type name ''{0}'' must match pattern ''{1}''."/>
         </module>