feat(ecs): add new check ecs_service_fargate_latest_platform_version

[MarioRgzLpz]

Context

Created a new check to make sure ECS Fargate services are running the latest Fargate platform version. The control fails if the platform version is not the latest.
Running ECS Fargate services on outdated platform versions can expose your infrastructure to vulnerabilities and security issues that have been addressed in newer versions.

Description

Added new check ecs_service_fargate_latest_platform_version with respective unit tests and metadata. Added 3 new attributes to the Service model in order to do the check. Added 2 new configurable parameters to choose the latest linux/windows version (by default linux:1.4.0/windows:1.0.0).

Checklist

• Are there new checks included in this PR? Yes
  • If so, do we need to update permissions for the provider? No
• 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.

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

All modified and coverable lines are covered by tests ✅

Project coverage is 89.11%. Comparing base (13e40eb) to head (7b882ac).
Report is 29 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5258      +/-   ##
==========================================
- Coverage   89.11%   89.11%   -0.01%     
==========================================
  Files         988     1000      +12     
  Lines       30364    30736     +372     
==========================================
+ Hits        27060    27390     +330     
- Misses       3304     3346      +42     

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