MAT-180 - exclude all non-GBP, non-EUR currencies from fee VAT for now

[NoelLH]

No description provided.

[codecov]

Codecov Report

Merging #245 (2ce03c3) into develop (1a6c521) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@              Coverage Diff              @@
##             develop     #245      +/-   ##
=============================================
+ Coverage      63.29%   63.31%   +0.01%     
  Complexity       590      590              
=============================================
  Files             57       57              
  Lines           1989     1990       +1     
=============================================
+ Hits            1259     1260       +1     
  Misses           730      730              

Impacted Files	Coverage Δ
src/Application/Fees/Calculator.php	100.00% <100.00%> (ø)

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