fix: app/package.json & app/yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NODEFETCH-674311

app/package.json

@@ -46,7 +46,7 @@
     "queue": "^4.4.2",
     "quick-lru": "^3.0.0",
     "react": "^16.8.4",
-    "react-addons-shallow-compare": "^15.6.2",
+    "react-addons-shallow-compare": "^15.6.3",
     "react-css-transition-replace": "^3.0.3",
     "react-dom": "^16.8.4",
     "react-transition-group": "^1.2.0",

app/yarn.lock

@@ -515,7 +515,7 @@ fast-safe-stringify@^2.0.4:
   resolved "https://registry.yarnpkg.com/fast-safe-stringify/-/fast-safe-stringify-2.0.7.tgz#124aa885899261f68aedb42a7c080de9da608743"
   integrity sha512-Utm6CdzT+6xsDk2m8S6uL8VHxNwI6Jub+e9NYTcAms28T84pTa25GJQV9j0CY0N1rM8hK4x6grpF2BQf+2qwVA==
 
-fbjs@^0.8.16, fbjs@^0.8.4:
+fbjs@^0.8.16:
   version "0.8.16"
   resolved "https://registry.yarnpkg.com/fbjs/-/fbjs-0.8.16.tgz#5e67432f550dc41b572bf55847b8aca64e5337db"
   integrity sha1-XmdDL1UNxBtXK/VYR7ispk5TN9s=
@@ -1258,12 +1258,11 @@ rc@^1.2.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-addons-shallow-compare@^15.6.2:
-  version "15.6.2"
-  resolved "https://registry.yarnpkg.com/react-addons-shallow-compare/-/react-addons-shallow-compare-15.6.2.tgz#198a00b91fc37623db64a28fd17b596ba362702f"
-  integrity sha1-GYoAuR/DdiPbZKKP0XtZa6NicC8=
+react-addons-shallow-compare@^15.6.3:
+  version "15.6.3"
+  resolved "https://registry.yarnpkg.com/react-addons-shallow-compare/-/react-addons-shallow-compare-15.6.3.tgz#28a94b0dfee71530852c66a69053d59a1baf04cb"
+  integrity sha512-EDJbgKTtGRLhr3wiGDXK/+AEJ59yqGS+tKE6mue0aNXT6ZMR7VJbbzIiT6akotmHg1BLj46ElJSb+NBMp80XBg==
   dependencies:
-    fbjs "^0.8.4"
     object-assign "^4.1.0"
 
 react-css-transition-replace@^3.0.3: