Description

This PR updates the MixPanel proxy URL to use the updated production server domain instead. We should no longer be using the dev server.

Related issues

No related issues.

Manual testing steps

1. You can test the proxy server is up by running the following command in your terminal (project token in invalid)

curl -i -s -k -X $'POST' \
    -H $'Host: proxy.api.cx.metamask.io' -H $'Accept: application/json' -H $'Content-Type: application/json' -H $'Content-Length: 30' \
    --data-binary $'{\"distinct_ids\": [\"12312312\"]}' \
    $'https://proxy.api.cx.metamask.io/mixpanel/v1/api/app/data-deletions/v3.0/?token=abcdefg'

2. In the MetaMask application, navigate Settings -> Security & Privacy -> Delete MetaMetrics Data. Upon clicking you should see a request made.

Screenshots/Recordings

Before

Not applicable

After

Not applicable

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've clearly explained what problem this PR is solving and how it is solved.
• I've included manual testing steps
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.
• I’ve properly set the pull request status:
  • In case it's not yet "ready for review", I've set it to "draft".
  • In case it's "ready for review", I've changed it from "draft" to "non-draft".

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.