Update version to 231.5.0

Author: TSRBerry

plugin/gradle.properties

@@ -4,7 +4,7 @@ pluginGroup = org.example.githubpang.rossynt
 pluginName = Rossynt
 pluginRepositoryUrl = https://github.com/GitHubPang/Rossynt
 # SemVer format -> https://semver.org
-pluginVersion = 223.5.0
+pluginVersion = 231.5.0
 
 # Supported build number ranges and IntelliJ Platform versions -> https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 pluginSinceBuild = 231