Bump deps, remove deprecated ui-util (#145)

* Bump deps, remove deprecated ui-util

* Bumop, fix lint

* Update vuepress config (excl. removed ui-util)

docs/.vuepress/config.js

@@ -25,7 +25,6 @@ module.exports = {
       ['/ui-identicon/', '@polkadot/ui-identicon'],
       ['/ui-keyring/', '@polkadot/ui-keyring'],
       ['/ui-settings/', '@polkadot/ui-settings'],
-      ['/ui-util/', '@polkadot/ui-util'],
       '/CONTRIBUTING.md'
     ]
   }