Update Providers.md with consent for preexisting Google app

[Pionerd]

What this PR does / why we need it

Which issue this PR fixes

• fixes [Google] Refresh token #166

Special notes for your reviewer

Particularly user-facing changes

Checklist

Complete these before marking the PR as ready to review:

• DCO signed
• The PR title has a summary of the changes
• The PR body has a summary to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5840fd9) 72.54% compared to head (d896f97) 72.54%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #167   +/-   ##
=======================================
  Coverage   72.54%   72.54%           
=======================================
  Files          48       48           
  Lines        1872     1872           
=======================================
  Hits         1358     1358           
  Misses        430      430           
  Partials       84       84           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jkroepke]

Thanks!