wip(build): update browserslist to support 90% browser global audience coverage

see https://browsersl.ist/#q=%3E+1%25%2C+last+8+versions%2C+Firefox+ESR+and+not+dead

Author: Franck Freiburger

package.json

@@ -20,7 +20,7 @@
   },
   "license": "MIT",
   "version": "0.9.0",
-  "browserslist": "> 1%, last 2 versions, Firefox ESR, not dead",
+  "browserslist": "> 1%, last 8 versions, Firefox ESR and not dead",
   "main": "./dist/vue3-sfc-loader.js",
   "module": "./dist/vue3-sfc-loader.esm.js",
   "types": "./dist/types/vue3-esm/index.d.ts",