chore: Fix error where all calls register as test calls because typeguard imports unittest

[adchia]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: achals, adchia

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [achals,adchia]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov-commenter]

Codecov Report

Merging #3030 (113e892) into master (fe9a0bd) will increase coverage by 9.97%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3030      +/-   ##
==========================================
+ Coverage   67.72%   77.69%   +9.97%     
==========================================
  Files         167      194      +27     
  Lines       14678    16097    +1419     
==========================================
+ Hits         9940    12507    +2567     
+ Misses       4738     3590    -1148     

Flag	Coverage Δ
integrationtests	67.57% <100.00%> (-0.15%)	⬇️
unittests	59.35% <100.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
sdk/python/feast/usage.py	91.57% <100.00%> (+8.51%)	⬆️
...ores/contrib/trino_offline_store/trino_type_map.py	6.66% <0.00%> (ø)
...ffline_stores/contrib/trino_offline_store/trino.py	8.72% <0.00%> (ø)
.../online_stores/contrib/hbase_repo_configuration.py	100.00% <0.00%> (ø)
...s/contrib/trino_offline_store/tests/data_source.py	17.64% <0.00%> (ø)
...s/contrib/trino_offline_store/connectors/upload.py	8.97% <0.00%> (ø)
...s/contrib/postgres_offline_store/tests/__init__.py	100.00% <0.00%> (ø)
sdk/python/feast/transformation_server.py	40.47% <0.00%> (ø)
...tores/contrib/trino_offline_store/trino_queries.py	15.05% <0.00%> (ø)
...offline_stores/contrib/spark_repo_configuration.py	100.00% <0.00%> (ø)
... and 91 more

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.