Update LSP4J to 0.12.0

Author: fwcd

adapter/build.gradle

@@ -15,7 +15,7 @@ startScripts {
 
 dependencies {
 	// The JSON-RPC and Debug Adapter Protocol implementations
-	implementation 'org.eclipse.lsp4j:org.eclipse.lsp4j.debug:0.10.0'
+	implementation 'org.eclipse.lsp4j:org.eclipse.lsp4j.debug:0.12.0'
 	implementation 'org.jetbrains.kotlin:kotlin-stdlib'
 	implementation 'org.jetbrains.kotlin:kotlin-reflect'
 	implementation('kotlin-language-server:shared') {