Copilot: add GitHub Mobile to content exclusion support table (#53084)

Co-authored-by: Dimitrios Philliou <d1m1tr10s@github.com>

content/copilot/managing-copilot/configuring-and-auditing-content-exclusion/excluding-content-from-github-copilot.md

@@ -47,6 +47,7 @@ Repository administrators{% ifversion ghec %}, organization owners, and enterpri
 | Xcode                                           | {% octicon "check" aria-label="Supported" %}  |                          Not applicable                          |
 | Azure Data Studio                               | {% octicon "x" aria-label="Not supported" %}  |                          Not applicable                          |
 | The {% data variables.product.github %} website |                Not applicable                 |           {% octicon "x" aria-label="Not supported" %}           |
+| {% data variables.product.prodname_mobile %}    |                Not applicable                 |           {% octicon "x" aria-label="Not supported" %}           |
 
 ### Limitations of content exclusions