bump: Update tools/nyc dependency (#4475)

* Update nyc dependency

* Fix tools nyc coverage reference

tools/package.json

@@ -52,7 +52,7 @@
     "mocha": "^5.2.0",
     "nock": "^11.9.1",
     "node-forge": "1.3.0",
-    "nyc": "^11.9.0",
+    "nyc": "^15.1.0",
     "promise": "^7.1.1",
     "random-js": "1.0.4",
     "should": "^8.3.1",

tools/scripts/unit-coverage.js

@@ -171,4 +171,4 @@ if (!process.env.NOCK_OFF && !process.env.AZURE_NOCK_RECORD) {
     }
 }
 
-require('../node_modules/nyc/bin/nyc');
+require('../../node_modules/nyc/bin/nyc');

tools/testlist.txt

@@ -1,2 +1,2 @@
 # BotFramework Connector SDK
-../libraries/botframework-connector/tests/connector-tests.js
+../libraries/botframework-connector/tests/connector.test.js