Fix ci (#116)

* Add npm workspaces.

* Remove node 14

Author: jonkemp

.github/workflows/main.yml

@@ -15,7 +15,6 @@ jobs:
         node-version:
           - 18
           - 16
-          - 14
 
     steps:
     - uses: actions/checkout@v3

package.json

@@ -3,6 +3,7 @@
   "version": "3.0.0",
   "description": "Inline css into an html file.",
   "main": "index.js",
+  "workspaces": ["./packages/*"],
   "dependencies": {
     "cheerio": "^1.0.0-rc.10",
     "css-rules": "^1.1.0",