chore(deps): update dependency ts-mocha to v8 (#861)

Co-authored-by: renovate[bot] <renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/opencensus-core/package-lock.json

@@ -64,7 +64,7 @@
     "intercept-stdout": "0.1.2",
     "mocha": "7.2.0",
     "nyc": "14.1.1",
-    "ts-mocha": "7.0.0",
+    "ts-mocha": "8.0.0",
     "ts-node": "8.10.2",
     "typescript": "3.9.10"
   },

packages/opencensus-core/package.json

@@ -58,7 +58,7 @@
     "mocha": "7.2.0",
     "nock": "10.0.6",
     "nyc": "14.1.1",
-    "ts-mocha": "7.0.0",
+    "ts-mocha": "8.0.0",
     "ts-node": "8.10.2",
     "typescript": "3.9.10"
   },

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

@@ -58,7 +58,7 @@
     "nock": "10.0.6",
     "nyc": "14.1.1",
     "rimraf": "3.0.2",
-    "ts-mocha": "7.0.0",
+    "ts-mocha": "8.0.0",
     "ts-node": "8.10.2",
     "typescript": "3.9.10"
   },

packages/opencensus-exporter-instana/package.json

@@ -56,7 +56,7 @@
     "gts": "1.1.2",
     "mocha": "7.2.0",
     "nyc": "14.1.1",
-    "ts-mocha": "7.0.0",
+    "ts-mocha": "8.0.0",
     "ts-node": "8.10.2",
     "typescript": "3.9.10"
   },

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

@@ -60,7 +60,7 @@
     "gts": "1.1.2",
     "mocha": "7.2.0",
     "nyc": "14.1.1",
-    "ts-mocha": "7.0.0",
+    "ts-mocha": "8.0.0",
     "ts-node": "8.10.2",
     "typescript": "3.9.10"
   },