fix: add CourierConfig to default registry

[aeneasr]

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security. vulnerability, I
  confirm that I got green light (please contact
  [email protected]) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #2243 (e345fe6) into master (506a0f1) will decrease coverage by 0.01%.
The diff coverage is n/a.

❗ Current head e345fe6 differs from pull request most recent head 5390a13. Consider uploading reports for the commit 5390a13 to get more accurate results

@@            Coverage Diff             @@
##           master    #2243      +/-   ##
==========================================
- Coverage   75.88%   75.87%   -0.02%     
==========================================
  Files         297      297              
  Lines       15909    15909              
==========================================
- Hits        12073    12071       -2     
- Misses       2978     2979       +1     
- Partials      858      859       +1     

Impacted Files	Coverage Δ
driver/registry.go	73.33% <ø> (ø)
persistence/sql/persister_courier.go	85.00% <0.00%> (-3.34%)	⬇️

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