build: Update linters

eslint-config-wikimedia      0.8.1  →   0.9.0
 stylelint-config-wikimedia   0.4.3  →   0.5.0

Change-Id: I0f55e743c2f38bb8910931c3989a6516e0527703

resources/css/ext.uls.languagesettings.less

@@ -34,13 +34,11 @@
 		width: 100%;
 		/* Using border instead of outline for focus (outline doesn't have enough space) */
 		outline: 0;
-
 		color: #222;
 		padding: 5px 0 5px 42px;
 		border: 1px solid transparent;
 		background: left 15px top 6px transparent no-repeat;
 		background-size: 20px auto;
-
 		cursor: pointer;
 
 		// Remove the dotted border for Firefox