Update package versions (#1475)

Author: dbcp1

coco-ssd/demo/package.json

@@ -10,10 +10,10 @@
   },
   "dependencies": {
     "@tensorflow-models/coco-ssd": "file:../dist",
-    "@tensorflow/tfjs-backend-cpu": "^4.20.0",
-    "@tensorflow/tfjs-backend-webgl": "^4.20.0",
-    "@tensorflow/tfjs-core": "^4.20.0",
-    "@tensorflow/tfjs-converter": "^4.20.0",
+    "@tensorflow/tfjs-backend-cpu": "^4.21.0",
+    "@tensorflow/tfjs-backend-webgl": "^4.21.0",
+    "@tensorflow/tfjs-core": "^4.21.0",
+    "@tensorflow/tfjs-converter": "^4.21.0",
     "stats.js": "^0.17.0"
   },
   "scripts": {

coco-ssd/package.json

@@ -13,16 +13,16 @@
     "url": "https://github.com/tensorflow/tfjs-models.git"
   },
   "peerDependencies": {
-    "@tensorflow/tfjs-converter": "^4.20.0",
-    "@tensorflow/tfjs-core": "^4.20.0"
+    "@tensorflow/tfjs-converter": "^4.21.0",
+    "@tensorflow/tfjs-core": "^4.21.0"
   },
   "devDependencies": {
     "@rollup/plugin-commonjs": "^11.0.2",
     "@rollup/plugin-node-resolve": "^7.1.1",
     "@rollup/plugin-typescript": "^3.0.0",
-    "@tensorflow/tfjs-backend-cpu": "^4.20.0",
-    "@tensorflow/tfjs-converter": "^4.20.0",
-    "@tensorflow/tfjs-core": "^4.20.0",
+    "@tensorflow/tfjs-backend-cpu": "^4.21.0",
+    "@tensorflow/tfjs-converter": "^4.21.0",
+    "@tensorflow/tfjs-core": "^4.21.0",
     "@types/jasmine": "~2.8.8",
     "babel-core": "~6.26.0",
     "babel-plugin-transform-runtime": "~6.23.0",