Adds signature to .drone.yml

.drone.yml

@@ -1,3 +1,4 @@
+---
 kind: pipeline
 name: default
 
@@ -53,4 +54,9 @@ steps:
     when:
       event: [deployment, push]
       branches: [master, develop]
-      
+      
+---
+kind: signature
+hmac: 88ffe92b43a61f5ac1011b11e4d3b3023e3d260f786e71cf6875b80324489fc1
+
+...