fix: add BucketingKey to DTO converter functions

[ricardobeat]

Description

Was pulling my hair trying to figure out why the new bucketing didn't work on the server. Turns out we forgot to add it to the converters, so it gets lost in the cache initialization phase.

Tests don't cover this, should they?

Checklist

• I have tested this code
• I have added unit test to cover this code
• I have updated the documentation (README.md and /website/docs)
• I have followed the contributing guide

[netlify]

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🔨 Latest commit	345ca06
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[sonarcloud]

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 SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.11%. Comparing base (7e20e6a) to head (345ca06).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2377   +/-   ##
=======================================
  Coverage   86.10%   86.11%           
=======================================
  Files         102      102           
  Lines        3778     3780    +2     
=======================================
+ Hits         3253     3255    +2     
  Misses        400      400           
  Partials      125      125           

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[thomaspoignant]

There is clearly a missing test, I will add it before merging this PR and releasing a fix version.