Bump gradle to 9.2.1 and bump other build dependencies

Author: bobbylight

RSTAUI/build.gradle

@@ -11,10 +11,10 @@ base {
 dependencies {
     api 'com.fifesoft:rsyntaxtextarea:3.6.1'
     api 'com.fifesoft:autocomplete:3.3.3'
-    testImplementation platform('org.junit:junit-bom:5.12.1')
+    testImplementation platform('org.junit:junit-bom:6.0.1')
     testImplementation 'org.junit.jupiter:junit-jupiter'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
-    testImplementation 'org.mockito:mockito-core:5.15.2'
+    testImplementation 'org.mockito:mockito-core:5.21.0'
 }
 
 ext.isReleaseVersion = !project.version.endsWith('SNAPSHOT')

build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id 'com.github.spotbugs' version '6.1.7'
+    id 'com.github.spotbugs' version '6.4.8'
     id 'io.github.gradle-nexus.publish-plugin' version '2.0.0'
 }
 
@@ -21,7 +21,7 @@ allprojects {
     }
 
     wrapper {
-        gradleVersion = '8.13'
+        gradleVersion = '9.2.1'
     }
 
     tasks.withType(Javadoc) {
@@ -40,7 +40,7 @@ subprojects {
     }
 
     checkstyle {
-        toolVersion = '10.21.4'
+        toolVersion = '12.3.0'
     }
 
     spotbugs {

config/checkstyle/checkstyle.xml

@@ -108,7 +108,7 @@
 		<module name="JavadocType"/>
 		<!--
         <module name="JavadocVariable">
-			<property name="scope" value="package"/>
+			<property name="accessModifiers" value="package"/>
 		</module>
 		-->
 		<module name="JavadocStyle"/>
@@ -239,8 +239,10 @@
 		<!--<module name="MagicNumber"/> Unfortunately, too much noise -->
 		<!--<module name="MissingSwitchDefault"/>-->
 		<module name="MultipleVariableDeclarations"/>
+		<module name="PatternVariableAssignment"/>
 		<module name="SimplifyBooleanExpression"/>
 		<module name="SimplifyBooleanReturn"/>
+		<module name="UnnecessaryNullCheckWithInstanceOf"/>
 		<!--		<module name="UnnecessaryParentheses"/>-->
 		<module name="UnnecessarySemicolonAfterOuterTypeDeclaration"/>
 		<module name="UnnecessarySemicolonAfterTypeMemberDeclaration"/>

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME