Bump dev-master alias to 1.5.x

bd808 · bd808 · commit 841279fdc3fd · 2020-03-31T17:03:07.000-06:00
diff --git a/composer.json b/composer.json
@@ -28,7 +28,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.3.x-dev"
+            "dev-master": "1.5.x-dev"
         },
         "class": "Wikimedia\\Composer\\MergePlugin"
     },
