updated packages

package.json

@@ -4,17 +4,16 @@
   "version": "1.0.0",
   "author": "Hunter Chang",
   "dependencies": {
-    "gatsby": "^2.2.9",
-    "gatsby-cli": "^2.5.14",
-    "gatsby-plugin-manifest": "^2.0.24",
-    "gatsby-plugin-offline": "^2.0.25",
-    "gatsby-plugin-react-helmet": "^3.0.10",
-    "gatsby-plugin-sass": "^2.0.11",
-    "node-sass": "^4.11.0",
-    "react": "^16.8.5",
-    "react-dom": "^16.8.5",
-    "react-helmet": "^5.2.0",
-    "react-images": "^0.5.19"
+    "gatsby": "^2.20.12",
+    "gatsby-plugin-manifest": "^2.3.3",
+    "gatsby-plugin-offline": "^3.1.2",
+    "gatsby-plugin-react-helmet": "^3.2.1",
+    "gatsby-plugin-sass": "^2.2.1",
+    "node-sass": "^4.13.1",
+    "react": "^16.13.1",
+    "react-dom": "^16.13.1",
+    "react-helmet": "^5.2.1",
+    "react-images": "^1.0.0"
   },
   "keywords": [
     "gatsby"
@@ -27,7 +26,7 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "devDependencies": {
-    "prettier": "^1.14.2"
+    "prettier": "^2.0.2"
   },
   "repository": {
     "type": "git",