chore(plugin-seo): add to CI, minor package.json improvements (#4761)

* chore: add plugin-seo to CI

* chore(plugin-seo): minor package.json improvements

.github/workflows/main.yml

@@ -256,6 +256,7 @@ jobs:
           - plugin-nested-docs
           - plugin-search
           - plugin-sentry
+          - plugin-seo
 
     steps:
       - name: Use Node.js 18

packages/plugin-seo/package.json

@@ -4,14 +4,14 @@
   "homepage:": "https://payloadcms.com",
   "repository": "git@github.com:payloadcms/plugin-seo.git",
   "description": "SEO plugin for Payload",
-  "main": "dist/index.js",
-  "types": "dist/index.d.ts",
+  "main": "./dist/index.js",
+  "types": "./dist/index.d.ts",
   "scripts": {
     "build": "tsc",
     "lint": "eslint src",
     "lint:fix": "eslint --fix --ext .ts,.tsx src",
     "clean": "rimraf {dist,*.tsbuildinfo}",
-    "prepublishOnly": "yarn clean && yarn build"
+    "prepublishOnly": "pnpm clean && pnpm build"
   },
   "keywords": [
     "payload",