fix: add explicit dependency between kapt and dokka (#1842)

Author: dariuszkuc

servers/graphql-kotlin-spring-server/build.gradle.kts

@@ -37,4 +37,7 @@ tasks {
             }
         }
     }
+    val dokkaJavadoc = getByName("dokkaJavadoc") {
+        dependsOn("kaptKotlin")
+    }
 }