Fix TIMESERIES (round floats) and JSON tests

[dvora-h]

Pull Request check-list

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• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?
• Was the change added to CHANGES file?

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Description of change

Please provide a description of the change here.

[codecov-commenter]

Codecov Report

Base: 92.20% // Head: 92.19% // Decreases project coverage by -0.01% ⚠️

Coverage data is based on head (28eec6d) compared to base (936d49f).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2421      +/-   ##
==========================================
- Coverage   92.20%   92.19%   -0.02%     
==========================================
  Files         110      110              
  Lines       28894    28889       -5     
==========================================
- Hits        26643    26633      -10     
- Misses       2251     2256       +5     

Impacted Files	Coverage Δ
tests/test_asyncio/test_json.py	100.00% <100.00%> (ø)
tests/test_asyncio/test_timeseries.py	100.00% <100.00%> (ø)
tests/test_json.py	100.00% <100.00%> (ø)
tests/test_search.py	99.23% <100.00%> (-0.01%)	⬇️
tests/test_timeseries.py	100.00% <100.00%> (ø)
tests/test_asyncio/test_pubsub.py	99.37% <0.00%> (-0.16%)	⬇️
tests/test_asyncio/test_cluster.py	97.28% <0.00%> (-0.14%)	⬇️
tests/test_cluster.py	96.85% <0.00%> (-0.12%)	⬇️

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