this is my package.json that works
"dependencies": {
"@strapi/strapi": "4.7.0",
"@strapi/plugin-users-permissions": "4.7.0",
"@strapi/plugin-i18n": "4.7.0",
"@_sh/strapi-plugin-ckeditor": "^1.1.1",
"@strapi/provider-email-sendgrid": "^4.4.5",
"@strapi/provider-upload-cloudinary": "^4.4.5",
"pg": "8.7.3",
"pg-connection-string": "^2.5.0",
"strapi-plugin-slugify": "^2.2.2"
},
...
"engines": {
"node": "14.20.0",
"npm": "6.14.17"
}
}