Update dependency ts-node to v8

Author: renovate-bot

packages/opencensus-core/package-lock.json

@@ -53,7 +53,7 @@
     "mocha": "^5.0.4",
     "ncp": "^2.0.0",
     "nyc": "13.1.0",
-    "ts-node": "^7.0.1",
+    "ts-node": "^8.0.0",
     "typescript": "~2.9.0"
   },
   "dependencies": {

packages/opencensus-core/package.json

@@ -51,7 +51,7 @@
     "ncp": "^2.0.0",
     "nock": "^10.0.0",
     "nyc": "13.1.0",
-    "ts-node": "^7.0.1",
+    "ts-node": "^8.0.0",
     "typescript": "~3.2.0"
   },
   "dependencies": {

packages/opencensus-exporter-instana/package-lock.json

@@ -52,7 +52,7 @@
     "nyc": "^13.0.0",
     "rimraf": "^2.6.2",
     "shimmer": "^1.2.0",
-    "ts-node": "^7.0.1",
+    "ts-node": "^8.0.0",
     "typescript": "~3.2.0"
   },
   "dependencies": {