More datamanagers use!

[lferran]

Description

Describe the proposed changes made in this PR.

How was this PR tested?

Describe how you tested this PR.

[codecov]

Codecov Report

❌ Patch coverage is 96.15385% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.47%. Comparing base (9962c61) to head (49d20bf).

Files with missing lines	Patch %	Lines
.../src/nucliadb/common/datamanagers/conversations.py	97.72%	1 Missing ⚠️
...ucliadb/src/nucliadb/ingest/fields/conversation.py	94.11%	1 Missing ⚠️
nucliadb/src/nucliadb/reader/api/v1/resource.py	92.30%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3750      +/-   ##
==========================================
+ Coverage   85.46%   85.47%   +0.01%     
==========================================
  Files         563      564       +1     
  Lines       48810    48850      +40     
  Branches    14351    14351              
==========================================
+ Hits        41714    41754      +40     
- Misses       6462     6463       +1     
+ Partials      634      633       -1     

Flag	Coverage Δ
nidx	79.72% <ø> (ø)
nucliadb	74.22% <94.87%> (+0.05%)	⬆️
nucliadb-ingest	43.78% <75.64%> (+0.04%)	⬆️
nucliadb-reader	43.78% <89.74%> (+0.06%)	⬆️
nucliadb-search	55.00% <79.48%> (+0.03%)	⬆️
nucliadb-standalone	46.15% <23.07%> (-0.03%)	⬇️
nucliadb-train	44.76% <23.07%> (-0.03%)	⬇️
nucliadb-writer	47.16% <79.48%> (-0.06%)	⬇️
nucliadb_dataset	72.84% <ø> (ø)
nucliadb_models	69.70% <ø> (ø)
nucliadb_sdk	82.27% <ø> (ø)
nucliadb_telemetry	85.70% <ø> (ø)
nucliadb_utils	80.89% <ø> (ø)

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