Update guide to add a note about Consent Mode.md

### Proposed changes

Adding a note to our Google destinations about our current work on Consent Mode.

### Merge timing

ASAP once approved

### Related issues (optional)

Slack: https://twilio.slack.com/archives/CC97A542H/p1708101546856579

Author: prigiattiperrut

src/connections/destinations/catalog/google-tag-manager/index.md

@@ -17,6 +17,9 @@ id: 54521fd625e721e32a72eeb9
 3. In your Segment UI's destination settings, enter your Container ID (note: it should start with "GTM-"). You can find this in the Admin section of your [GTM dashboard](https://tagmanager.google.com/#/admin/){:target="_blank"}.
 4. GTM loads on any pages where your Segment snippet is initialized and `analytics.page` is called in client-side JavaScript. Once you've turned on GTM through Segment, you can use Segment `track` events to populate the GTM `dataLayer`, and remove the GTML snippet from your page.
 
+> info ""
+> Consent Mode: Segment is currently building Consent Mode functionality for all affected Google destinations. However, for GTM, please note that consent mode settings need to be managed directly [within your GTM account](https://support.google.com/tagmanager/answer/10718549?hl=en#tag-settings). Therefore, there's no direct update from Segment for the GTM destination regarding consent mode, as it is managed within GTM tags themselves.
+
 > info ""
 > Segment recommends that you load GTM through Segment rather than loading Segment inside of GTM. When you load Segment through GTM, it limits Segment's ability to help troubleshoot.