[COST-4807] Remove remove-stale from enabled tags masu endpoint options

[cgoodfred]

Jira Ticket

COST-4807

Description

This change will remove the remove-stale action from the enabled tags masu endpoint to address a high impact SNYK alert.

Testing

1. Checkout Branch
2. Restart Koku
3. Try to post a remove_stale action to the masu endpoint: /api/cost-management/v1/enabled_tags/

{
    "schema": "org1234567",
    "action": "remove_stale",
    "provider_type": "aws"
}

4. Verify that you are unable to do so.

Release Notes

• proposed release note

* [[COST-4807]](https://issues.redhat.com/browse/COST-4807) Remove the remove-stale action from the enabled tags masu endpoint.

[codecov]

Codecov Report

Merging #5007 (08e5f39) into main (81f259e) will increase coverage by 0.0%.
The diff coverage is n/a.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #5007   +/-   ##
=====================================
  Coverage   94.1%   94.1%           
=====================================
  Files        377     377           
  Lines      31243   31230   -13     
  Branches    3710    3709    -1     
=====================================
- Hits       29398   29387   -11     
  Misses      1174    1174           
+ Partials     671     669    -2