release: bump plugin version to 0.3.1 (#102)

Author: zzehring

gradle.properties

@@ -5,7 +5,7 @@ pluginGroup = com.github.zzehring.intellijjsonnet
 pluginName = Jsonnet Language Server
 pluginProjectName = jsonnet-language-server
 # SemVer format -> https://semver.org
-pluginVersion = 0.3.0
+pluginVersion = 0.3.1
 
 # See https://plugins.jetbrains.com/docs/intellij/build-number-ranges.html
 # for insight into build numbers and IntelliJ Platform versions.