Work around issue in curl 8.7.1

[jefferis]

• workaround is not to accept deflate/gzip encoding so not exactly ideal
• also warns hourly to update curl if possible

[codecov]

Codecov Report

Attention: Patch coverage is 28.57143% with 5 lines in your changes missing coverage. Please review.

Project coverage is 58.21%. Comparing base (6b12978) to head (5c396ea).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
R/flywire-fetch.R	28.57%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #210      +/-   ##
==========================================
- Coverage   58.25%   58.21%   -0.04%     
==========================================
  Files          39       39              
  Lines        5225     5232       +7     
==========================================
+ Hits         3044     3046       +2     
- Misses       2181     2186       +5     

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