Update Umami script URL to v2 version

[cstephen]

This PR updates the Umami script URL to work with Umami v2. I.e., umami.js was changed to script.js.

You will need the Umami v2 Vagrant VM to test against. If you do not already have this set up, refer to the Vagrant instructions in ua-snap/nccwsc-projects#154.

With the Vagrant VM running, and assuming Umami's port is forwarded to port 9999 of the host, simply change the Umami config in nuxt.config.js to:

umami: {
  scriptUrl: 'http://localhost:9999/script.js',
  websiteId: '2e69a077-ba5f-49c5-b076-09a44ab6fafd',
  ignoreDnt: false,
  // domains: 'northernclimatereports.org',
  ignoreLocalhost: true,
},

Then run NCR locally and verify that your traffic shows up here: http://localhost:9999/websites/2e69a077-ba5f-49c5-b076-09a44ab6fafd