fix: cache migration status

[aeneasr]

See https://github.com/ory-corp/cloud/issues/2691

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 security@ory.sh) 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 #2631 (dbffe83) into master (5a8a484) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2631      +/-   ##
==========================================
- Coverage   75.28%   75.27%   -0.01%     
==========================================
  Files         295      295              
  Lines       16627    16630       +3     
==========================================
+ Hits        12517    12518       +1     
- Misses       3157     3158       +1     
- Partials      953      954       +1     

Impacted Files	Coverage Δ
driver/registry_default.go	87.14% <100.00%> (+0.11%)	⬆️
persistence/sql/persister.go	71.75% <0.00%> (-1.53%)	⬇️

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