fix: Add clients to service config

[lindseysimple]

Relates to #5054. Add clients field to service config.

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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
23.5% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.

Project coverage is 28.05%. Comparing base (74c8cdb) to head (6c90d74).

Files with missing lines	Patch %	Lines
internal/core/data/config/config.go	0.00%	1 Missing ⚠️
internal/core/metadata/config/config.go	0.00%	1 Missing ⚠️
internal/security/proxyauth/config/config.go	0.00%	1 Missing ⚠️
internal/support/notifications/config/config.go	0.00%	1 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5062      +/-   ##
==========================================
- Coverage   28.06%   28.05%   -0.01%     
==========================================
  Files         257      257              
  Lines       18595    18599       +4     
==========================================
  Hits         5218     5218              
- Misses      12156    12160       +4     
  Partials     1221     1221              

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[cloudxxx8]

LGTM