Feature CLS2 -1085 Accept any valid string for Eyblead

[santoshdasa12345]

Description of change

Similar to #5849, EYB leads were being rejected by the serialiser at ingestion time due to invalid choices for spend, when in reality we hadn't updated our list of choices to match new ones implemented on EYB's side.

To avoid this issue occurring again, it was decided to remove the choice restriction on this field, as well as intent and landing_timeframe.

Checklist

• Has this branch been rebased on top of the current main branch?

  Explanation

  The branch should not be stale or have conflicts at the time reviews are requested.

• Is the CircleCI build passing?

General points

Other things to check

• Make sure fixtures/test_data.yaml is maintained when updating models
• Consider the admin site when making changes to models
• Use select-/prefetch-related field lists in views and search apps, and update them when fields are added
• Make sure the README is updated e.g. when adding new environment variables

See docs/CONTRIBUTING.md for more guidelines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.61%. Comparing base (0100779) to head (7772e48).
Report is 12 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #5852   +/-   ##
=======================================
  Coverage   96.60%   96.61%           
=======================================
  Files        1047     1048    +1     
  Lines       24920    24925    +5     
  Branches     1649     1649           
=======================================
+ Hits        24075    24081    +6     
+ Misses        689      688    -1     
  Partials      156      156           

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[baarkerlounger]

Bit unfortunate but pragmatic for now I guess