fix: add validation for concurrent_modification error

[ItsSudip]

What are the changes introduced in this PR?

We are returning 400 status code for concurrent_modification error but we should retry those events. So added a validation to return 500 status code.

What is the related Linear task?

Resolves INT-2536

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

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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/3654/test-report.html

[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
89.8% Coverage on New Code
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 88.54%. Comparing base (cb14429) to head (597113f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3654   +/-   ##
=======================================
  Coverage   88.54%   88.54%           
=======================================
  Files         585      585           
  Lines       31850    31858    +8     
  Branches     7588     7590    +2     
=======================================
+ Hits        28201    28209    +8     
  Misses       3327     3327           
  Partials      322      322           

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