fix(event_handler): make the max_age attribute comply with RFC specification

[leandrodamascena]

Issue number: #4730

Summary

Changes

This PR fixes the cookie handling based on RFC6265 by ensuring the Max-Age field is hyphenated (Max-Age).

User experience

from aws_lambda_powertools.shared.cookies import Cookie
from aws_lambda_powertools.event_handler import Response
cookie = Cookie(name="Test", value="Test", max_age=60)
str(cookie)
>>> 'Test=Test; Max-Age=60; Secure'

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• 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

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

Disclaimer: We value your time and bandwidth. As such, any pull requests created on non-triaged issues might not be successful.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.60%. Comparing base (10d551c) to head (19b2b5a).
Report is 4 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4731      +/-   ##
===========================================
+ Coverage    96.43%   96.60%   +0.17%     
===========================================
  Files          223      223              
  Lines        10757    10757              
  Branches      2001     2001              
===========================================
+ Hits         10373    10392      +19     
+ Misses         270      259      -11     
+ Partials       114      106       -8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.