fix(event_sources): change partition and offset field types in KafkaEventRecord

[scampbell5]

Issue number: #4504

Summary

Changes

Updated offset and partition properties to be an int type instead of str on the KafkaEventRecord class.

User experience

from aws_lambda_powertools.utilities.data_classes import event_source, KafkaEvent

@event_source(data_class=KafkaEvent)
def lambda_handler(event: KafkaEvent, context):
    assert isinstance(event.record.offset, int)
    assert isinstance(event.record.partition, int)

Checklist

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• Meet tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

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[boring-cyborg]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.43%. Comparing base (e14e768) to head (cf74437).
Report is 571 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4515      +/-   ##
===========================================
+ Coverage    96.38%   96.43%   +0.05%     
===========================================
  Files          214      219       +5     
  Lines        10030    10626     +596     
  Branches      1846     1976     +130     
===========================================
+ Hits          9667    10247     +580     
- Misses         259      267       +8     
- Partials       104      112       +8     

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[leandrodamascena]

Thanks for submitting this PR so quickly @scampbell5!

APPROVED!

[boring-cyborg]

Awesome work, congrats on your first merged pull request and thank you for helping improve everyone's experience!