Update manifest.json

bump version to 2.1.5

Author: chiabre

custom_components/mbtalive/manifest.json

@@ -8,7 +8,7 @@
     "loggers": ["MBTALive"],
     "dependencies": [],
     "requirements": ["MBTAclient>=1.1.31"],
-    "version": "2.1.4",
+    "version": "2.1.5",
     "config_flow": true
   }