make ProtocolLib required

Author: zefir-git

src/main/resources/plugin.yml

@@ -2,5 +2,7 @@ name: ${project.name}
 main: ${project.groupId}.${project.artifactId}.${project.name}
 version: ${project.version}
 api-version: "1.15"
-author: Jikoo
-softdepend: ["ProtocolLib"]
+authors:
+  - Jikoo
+  - Cloudnode
+depend: ["ProtocolLib"]