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

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

Author: snyk-bot

package.json

@@ -36,7 +36,7 @@
     "fast-af": "^0.1.0",
     "nano-css": "^1.13.0",
     "opencollective-postinstall": "^2.0.1",
-    "react-focus-lock": "1.6.5",
+    "react-focus-lock": "1.6.6",
     "react-universal-interface": "^0.3.1",
     "screenfull": "^3.3.2",
     "throttle-debounce": "^2.0.1"

yarn.lock

@@ -8404,13 +8404,6 @@ promzard@^0.3.0:
   dependencies:
     read "1"
 
-[email protected]:
-  version "15.5.10"
-  resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.5.10.tgz#2797dfc3126182e3a95e3dfbb2e893ddd7456154"
-  dependencies:
-    fbjs "^0.8.9"
-    loose-envify "^1.3.1"
-
 prop-types@^15.5.10, prop-types@^15.5.4, prop-types@^15.5.8, prop-types@^15.5.9, prop-types@^15.6.0, prop-types@^15.6.1, prop-types@^15.6.2:
   version "15.6.2"
   resolved "https://registry.yarnpkg.com/prop-types/-/prop-types-15.6.2.tgz#05d5ca77b4453e985d60fc7ff8c859094a497102"
@@ -8688,12 +8681,13 @@ react-error-overlay@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/react-error-overlay/-/react-error-overlay-4.0.1.tgz#417addb0814a90f3a7082eacba7cee588d00da89"
 
-[email protected]:
-  version "1.6.5"
-  resolved "https://registry.npmjs.org/react-focus-lock/-/react-focus-lock-1.6.5.tgz#599be7854253d3cf082d882ef617fb13fd88ddac"
+[email protected]:
+  version "1.6.6"
+  resolved "https://registry.yarnpkg.com/react-focus-lock/-/react-focus-lock-1.6.6.tgz#ca175181c5d4286693f6c9a9edf09ff06886cf9b"
+  integrity sha512-qhASEhgcbZkSZY0tKl7NCxqhwVkBjELI6YORI4KSIHCGcYgB3DVwR36rQCm+Jfhnzo+47XRJNj3Nuhz32a8+0w==
   dependencies:
     focus-lock "^0.1.0"
-    prop-types "15.5.10"
+    prop-types "^15.5.10"
     react-side-effect "^1.1.3"
 
 react-fuzzy@^0.5.2: