[Snyk] Upgrade mixpanel-browser from 2.47.0 to 2.48.1

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to upgrade mixpanel-browser from 2.47.0 to 2.48.1.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

- The recommended version is **2 versions** ahead of your current version. - The recommended version was released **21 days ago**, on 2023-11-14.

Release notes

Package name: mixpanel-browser

2.48.1 - 2023-11-14
This update patches a discrepancy between the minified and unminified versions of the packaged SDK. Campaign parameters will now be stored as super properties persistently in all versions.
```
 </li>
 <li>
 2.48.0 - <a href="https://snyk.io/redirect/github/mixpanel/mixpanel-js/releases/tag/v2.48.0">2023-11-13</a>API endpoint routes can now be configured individually, so you can rename /track, /engage, and /groups HTTP endpoints arbitrarily. Configure with the <code>api_routes</code> option:
```
```
mixpanel.init(my token, {
api_host: https://my-proxy.example.com,
api_routes: {
track: foo/,
engage: bar/,
groups: baz/,
},
));
```
In the above example, event-tracking requests will go to https://my-proxy.example.com/foo/, user profile updates to https://my-proxy.example.com/bar/, etc.

Other fixes:
- Event properties object passed to mixpanel.track() will no longer be mutated
- Super properties are now reloaded from persistence when making every tracking call (i.e., kept fresh when another tab/window in the same browser has updated them)
- Extra failsafe behavior for trying to clear queued requests when localStorage doesn't work on startup, e.g., when localStorage is full so writes fail
- Block Chrome-Lighthouse user agent
- Fix for error in add_group() when adding a new group to an existing list
```
 </li>
 <li>
 2.47.0 - <a href="https://snyk.io/redirect/github/mixpanel/mixpanel-js/releases/tag/v2.47.0">2023-04-28</a>New default event properties are now captured with each event, holding campaign data present on the URL at the time of tracking. These include UTM parameters (in the format <code>utm_source</code>, <code>utm_campaign</code>, etc.) and Click Identifiers (e.g., <code>gclid</code>, <code>fbclid</code>, etc.). This functionality can be disabled with the initialization setting <code>{track_marketing: false}</code>.
```
~~UTM parameter properties are no longer persisted across pageloads as superproperties. They will be present only on events tracked on the same pageload where they were present initially.~~ (2023-09-13) Correction: UTM parameter properties still persist across pageloads as superproperties. Persistence will be removed in a future release.

For better first-touch attribution, UTM parameters present on the URL on pageload will be "set once" as profile properties (meaning that a new value will not overwrite any existing value on the profile property). These property names take the format initial_utm_source, initial_utm_campaign, etc. This functionality can be disabled with the initialization setting {skip_first_touch_marketing: true}.

Support for automatic page-view tracking has been restored. With the init option {track_pageview: true}, an event named $mp_web_page_view will be tracked on pageload, containing properties identifying the current page (current_page_title, current_url_path, etc.) as well as any UTM parameters and Click Identifiers. Pageview events with these properties can also be triggered manually:

<div class="highlight highlight-source-js notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="// track a pageview event mixpanel.track_pageview();

// track pageview with additional properties mixpanel.track_pageview({'Test variant': 'control'});">
```
// track a pageview event
mixpanel.track_pageview();
// track pageview with additional properties
mixpanel.track_pageview({'Test variant': 'control'});
```

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