fix(apigatewayv2): managed exception NotFoundException

[HugoPBrito]

Context

We were not handling correctly exception NotFoundException in service apigatewayv2.

Description

A new logic has been implemented to properly handle the exception, and a test has been added to verify its functionality.

Checklist

• Are there new checks included in this PR? Yes / No
  • If so, do we need to update permissions for the provider? Please review this carefully.
• Review if the code is being covered by tests.
• Review if code is being documented following this specification https://github.com/google/styleguide/blob/gh-pages/pyguide.md#38-comments-and-docstrings
• Review if backport is needed.
• Review if is needed to change the Readme.md

License

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

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 89.41%. Comparing base (54d87fa) to head (860596d).
Report is 6 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6576      +/-   ##
==========================================
- Coverage   93.70%   89.41%   -4.29%     
==========================================
  Files          66     1182    +1116     
  Lines        6340    33790   +27450     
==========================================
+ Hits         5941    30214   +24273     
- Misses        399     3576    +3177     

Flag	Coverage Δ
api	?
prowler	89.41% <80.00%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
prowler	89.41% <80.00%> (∅)
api	∅ <ø> (∅)

[prowler-bot]

💚 All backports created successfully

Status	Branch	Result
✅	v4.6
✅	v5.1

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details