Bump focus-visible from 4.1.5 to 5.0.0

Bumps [focus-visible](https://github.com/WICG/focus-visible) from 4.1.5 to 5.0.0.
- [Release notes](https://github.com/WICG/focus-visible/releases)
- [Commits](https://github.com/WICG/focus-visible/compare/v4.1.5...v5.0.0)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -56,7 +56,7 @@
     "express": "^4.14.1",
     "extend": "^3.0.2",
     "fetch-mock": "6",
-    "focus-visible": "^4.1.5",
+    "focus-visible": "^5.0.0",
     "gulp": "^4.0.0",
     "gulp-changed": "^4.0.0",
     "gulp-if": "^2.0.0",

yarn.lock

@@ -3662,10 +3662,10 @@ flush-write-stream@^1.0.2:
     inherits "^2.0.1"
     readable-stream "^2.0.4"
 
-focus-visible@^4.1.5:
-  version "4.1.5"
-  resolved "https://registry.yarnpkg.com/focus-visible/-/focus-visible-4.1.5.tgz#50b44e2e84c24b831ceca3cce84d57c2b311c855"
-  integrity sha512-yo/njtk/BB4Z2euzaZe3CZrg4u5s5uEi7ZwbHBJS2quHx51N0mmcx9nTIiImUGlgy+vf26d0CcQluahBBBL/Fw==
+focus-visible@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/focus-visible/-/focus-visible-5.0.0.tgz#f4dfd73dae73506e4da88c73daed8df38918a98d"
+  integrity sha512-pBs5ZHozBCX99PFcByTmVFoXcAH2bY49P4b/clrluy35QIZyVFBvP7MpWA6az00fkfyGZPm3H7XakKFesLptVg==
 
 follow-redirects@^1.0.0:
   version "1.4.1"