chore(deps): pin dependencies (#1205)

packages/opentelemetry-plugin-fetch/package.json

@@ -43,35 +43,35 @@
     "access": "public"
   },
   "devDependencies": {
-    "@babel/core": "^7.6.0",
+    "@babel/core": "7.10.2",
     "@opentelemetry/context-zone": "^0.8.2",
     "@opentelemetry/tracing": "^0.8.2",
-    "@types/mocha": "^7.0.0",
-    "@types/node": "^14.0.5",
-    "@types/shimmer": "^1.0.1",
-    "@types/sinon": "^7.0.13",
+    "@types/mocha": "7.0.2",
+    "@types/node": "14.0.13",
+    "@types/shimmer": "1.0.1",
+    "@types/sinon": "7.5.2",
     "@types/webpack-env": "1.15.2",
-    "babel-loader": "^8.0.6",
-    "codecov": "^3.1.0",
-    "gts": "^2.0.0",
-    "istanbul-instrumenter-loader": "^3.0.1",
-    "karma": "^5.0.5",
-    "karma-chrome-launcher": "^3.1.0",
-    "karma-coverage-istanbul-reporter": "^3.0.2",
-    "karma-mocha": "^2.0.1",
-    "karma-spec-reporter": "^0.0.32",
-    "karma-webpack": "^4.0.2",
-    "mocha": "^7.1.2",
-    "nyc": "^15.0.0",
-    "rimraf": "^3.0.0",
-    "sinon": "^7.5.0",
-    "ts-loader": "^6.0.4",
-    "ts-mocha": "^7.0.0",
-    "ts-node": "^8.6.2",
+    "babel-loader": "8.1.0",
+    "codecov": "3.7.0",
+    "gts": "2.0.2",
+    "istanbul-instrumenter-loader": "3.0.1",
+    "karma": "5.1.0",
+    "karma-chrome-launcher": "3.1.0",
+    "karma-coverage-istanbul-reporter": "3.0.3",
+    "karma-mocha": "2.0.1",
+    "karma-spec-reporter": "0.0.32",
+    "karma-webpack": "4.0.2",
+    "mocha": "7.2.0",
+    "nyc": "15.1.0",
+    "rimraf": "3.0.2",
+    "sinon": "7.5.0",
+    "ts-loader": "6.2.2",
+    "ts-mocha": "7.0.0",
+    "ts-node": "8.10.2",
     "typescript": "3.6.4",
-    "webpack": "^4.35.2",
-    "webpack-cli": "^3.3.9",
-    "webpack-merge": "^4.2.2"
+    "webpack": "4.43.0",
+    "webpack-cli": "3.3.11",
+    "webpack-merge": "4.2.2"
   },
   "dependencies": {
     "@opentelemetry/api": "^0.8.3",