ci: Fix go unit tests failure

[adchia]

What this PR does / why we need it:
Unclear why tests passed before, but the Go unit tests run the Feast Python CLI, which relies on Python protos being built. The original make test-go command does not build those Python protos.

Which issue(s) this PR fixes:

Fixes #

[achals]

/ok-to-test
/lgtm

[achals]

barf

[codecov-commenter]

Codecov Report

Merging #3078 (06362c6) into master (4b1476f) will increase coverage by 8.49%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3078      +/-   ##
==========================================
+ Coverage   67.43%   75.93%   +8.49%     
==========================================
  Files         169      203      +34     
  Lines       14936    16839    +1903     
==========================================
+ Hits        10072    12786    +2714     
+ Misses       4864     4053     -811     

Flag	Coverage Δ
integrationtests	67.29% <ø> (-0.14%)	⬇️
unittests	58.13% <ø> (?)

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

Impacted Files	Coverage Δ
...b/cassandra_online_store/cassandra_online_store.py	2.63% <0.00%> (ø)
.../contrib/postgres_offline_store/postgres_source.py	50.66% <0.00%> (ø)
sdk/python/feast/infra/utils/hbase_utils.py	41.17% <0.00%> (ø)
...k/python/feast/infra/materialization/lambda/app.py	26.66% <0.00%> (ø)
..._stores/contrib/postgres_offline_store/postgres.py	35.22% <0.00%> (ø)
...s/contrib/spark_offline_store/tests/data_source.py	40.42% <0.00%> (ø)
.../feature_repos/universal/online_store/cassandra.py	42.85% <0.00%> (ø)
...ine_stores/contrib/cassandra_repo_configuration.py	100.00% <0.00%> (ø)
...line_stores/contrib/postgres_repo_configuration.py	100.00% <0.00%> (ø)
...offline_stores/contrib/spark_repo_configuration.py	100.00% <0.00%> (ø)
... and 98 more

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[achals]

/lgtm

[feast-ci-bot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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• OWNERS [achals,adchia]

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