chore(config): migrate renovate config

[renovate]

The Renovate config in this repository needs migrating. Typically this is because one or more configuration options you are using have been renamed.

You don't need to merge this PR right away, because Renovate will continue to migrate these fields internally each time it runs. But later some of these fields may be fully deprecated and the migrations removed. So it's a good idea to merge this migration PR soon.

🔕 Ignore: Close this PR and you won't be reminded about config migration again, but one day your current config may no longer be valid.

❓ Got questions? Does something look wrong to you? Please don't hesitate to request help here.

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[github-actions]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.11%. Comparing base (8ca5f8b) to head (fd70a2c).
Report is 8 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4688   +/-   ##
========================================
  Coverage    80.11%   80.11%           
========================================
  Files         2127     2127           
  Lines        56292    56292           
  Branches      7018     7018           
========================================
  Hits         45101    45101           
  Misses        8779     8779           
  Partials      2412     2412           

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[bmarty]

Note: I checked a box in #150 to trigger this.