chore: move mailchimp from myaxios to httpget

[ItsSudip]

What are the changes introduced in this PR?

We are updating the axios handler for MailChimp.

What is the related Linear task?

Resolves INT-1907

Please explain the objectives of your changes below

Put down any required details on the broader aspect of your changes. If there are any dependent changes, mandatorily mention them here

Any changes to existing capabilities/behaviour, mention the reason & what are the changes ?

N/A

Any new dependencies introduced with this change?

N/A

Any new generic utility introduced or modified. Please explain the changes.

N/A

Any technical or performance related pointers to consider with the change?

N/A

@coderabbitai review

---

Developer checklist

• My code follows the style guidelines of this project

• No breaking changes are being introduced.

• All related docs linked with the PR?

• All changes manually tested?

• Any documentation changes needed with this change?

• Is the PR limited to 10 file changes?

• Is the PR limited to one linear task?

• Are relevant unit and component test-cases added in new readability format?

Reviewer checklist

• Is the type of change in the PR title appropriate as per the changes?

• Verified that there are no credentials or confidential data exposed with the changes.

[devops-github-rudderstack]

Test report for this run is available at: https://test-integrations-dev.s3.amazonaws.com/integrations-test-reports/rudder-transformer/3462/test-report.html

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.48%. Comparing base (17179db) to head (bc40ef3).
Report is 16 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3462   +/-   ##
========================================
  Coverage    88.48%   88.48%           
========================================
  Files          584      584           
  Lines        31775    31777    +2     
  Branches      7567     7569    +2     
========================================
+ Hits         28116    28118    +2     
  Misses        3335     3335           
  Partials       324      324           

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

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
96.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[devops-github-rudderstack]

This PR is considered to be stale. It has been open for 20 days with no further activity thus it is going to be closed in 7 days. To avoid such a case please consider removing the stale label manually or add a comment to the PR.

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
0 Accepted issues

Measures
0 Security Hotspots
97.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud