chore: update dependency coveralls to ^3.1.1

Signed-off-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -50,7 +50,7 @@
     "benchmark": "^2.1.4",
     "bluebird": "^3.5.4",
     "commitlint": "^13.1.0",
-    "coveralls": "^3.0.4",
+    "coveralls": "^3.1.1",
     "eslint": "^6.6.0",
     "eslint-config-loopback": "^13.0.0",
     "juggler-v3": "file:./deps/juggler-v3",