chore(deps): upgrade to doiuse 6

Implements browser range shortening (6,7,8 -> 6-8)
so some test cases need updating.

Author: edg2s

lib/index.test.js

@@ -118,7 +118,7 @@ testRule({
     {
       code: 'div { display: table; }',
       description: 'disallow display:table for IE 6 and IE 7',
-      message: `Unexpected browser feature "css-table" is not supported by IE 6,7 (plugin/no-unsupported-browser-features)`,
+      message: `Unexpected browser feature "css-table" is not supported by IE 6-7 (plugin/no-unsupported-browser-features)`,
       line: 1,
       column: 7,
     },

package.json

@@ -18,7 +18,7 @@
   },
   "dependencies": {
     "browserslist": "^4.26.3",
-    "doiuse": "^6.0.5",
+    "doiuse": "^6.0.6",
     "postcss": "^8.4.32"
   },
   "devDependencies": {