allow Nextcloud 12

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

.travis.yml

@@ -68,6 +68,8 @@ script:
 
 matrix:
   include:
+    - php: 7
+      env: "CORE_BRANCH=stable11"
     - php: 5.6
       env: "DB=mysql"
     - php: 7.0

appinfo/info.xml

@@ -18,7 +18,7 @@
 
 	<dependencies>
 		<php min-version="5.6" max-version="7.0"></php>
-		<nextcloud min-version="11" max-version="11" />
+		<nextcloud min-version="11" max-version="12" />
 	</dependencies>
 
 	<two-factor-providers>