fix(package): update loopback-boot to 3.1 to fix boot

Author: Walker Leite

template/package.json

@@ -21,7 +21,7 @@
     "express": "^4.16.2",
     "express-history-api-fallback": "^2.2.1",
     "loopback": "^3.16.2",
-    "loopback-boot": "^2.27.0",
+    "loopback-boot": "^3.1.0",
     "loopback-component-explorer": "^4.0.0",
     "serve-favicon": "^2.0.1",
     "strong-error-handler": "^2.0.0",