Upgrade lsp4j version to 0.15.0

Omar El Halabi · Omar El Halabi · commit e3b1836a5042 · 2022-08-06T12:10:04.000+02:00
diff --git a/gradle.properties b/gradle.properties
@@ -1,5 +1,5 @@
 projectVersion=1.3.2
 kotlinVersion=1.6.10
 exposedVersion=0.37.3
-lsp4jVersion=0.14.0
+lsp4jVersion=0.15.0
 javaVersion=11
