feat: retry crdb serializable errors

[aeneasr]

Correctly retries serializability errors in CockroachDB.

Related issue(s)

See https://github.com/ory-corp/cloud/issues/7311

Checklist

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• I have referenced an issue containing the design document if my change
  introduces a new feature.
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• I have added tests that prove my fix is effective or that my feature
  works.
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Further Comments

[alnr]

difficult to test programatically I guess

[aeneasr]

We do have tests in network for this so if it passes there it's fine here too