Update Dashboards to version 7.5.5 (#58)

Author: mikhail-vl

package.json

@@ -26,7 +26,7 @@
     "start": "docker-compose up",
     "start:dev": "docker-compose -f docker-compose/dev.yml up",
     "start:dev-7.2.1": "docker-compose -f docker-compose/dev-7.2.1.yml up",
-    "start:master": "docker-compose pull && docker-compose -f docker-compose/master.yml up",
+    "start:master": "docker-compose -f docker-compose/master.yml pull && docker-compose -f docker-compose/master.yml up",
     "stop": "docker-compose down",
     "stop:dev": "docker-compose -f docker-compose/dev.yml down",
     "test": "grafana-toolkit plugin:test --coverage",