chore(build): run integration tests sequentially

[thisisabhash]

Issue #

None

Description

This PR enables integration tests to run sequentially and disable parallel tests.

General Checklist

• Added new tests to cover change, if needed
• Build succeeds with all target using Swift Package Manager
• All unit tests pass
• All integration tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• New or updated tests include Given When Then inline code documentation and are named accordingly testThing_condition_expectation()
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 67.79%. Comparing base (fa5907b) to head (462e3ca).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4054      +/-   ##
==========================================
+ Coverage   67.77%   67.79%   +0.02%     
==========================================
  Files        1129     1129              
  Lines       52473    52473              
==========================================
+ Hits        35562    35576      +14     
+ Misses      16911    16897      -14     

Flag	Coverage Δ
API_plugin_unit_test	70.33% <ø> (-0.05%)	⬇️
AWSPluginsCore	69.25% <ø> (ø)
Amplify	47.96% <ø> (+0.03%)	⬆️
Analytics_plugin_unit_test	85.20% <ø> (ø)
Auth_plugin_unit_test	73.60% <ø> (+0.03%)	⬆️
DataStore_plugin_unit_test	83.39% <ø> (+0.07%)	⬆️
Geo_plugin_unit_test	74.86% <ø> (ø)
Logging_plugin_unit_test	65.27% <ø> (ø)
Predictions_plugin_unit_test	34.77% <ø> (ø)
PushNotifications_plugin_unit_test	88.43% <ø> (ø)
Storage_plugin_unit_test	79.39% <ø> (ø)
unit_tests	67.79% <ø> (+0.02%)	⬆️

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