Removed CURLOPT_REFERER

[twdnhfr]

Hey,

as stated in the curl docs https://everything.curl.dev/libcurl-http/requests#referrer

the Referer is a header that tells the server from which URL the user-agent was directed from.

So imho this shouldn't be the request's target url.

[codecov]

Codecov Report

Merging #444 (009be9c) into master (e50cc34) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #444      +/-   ##
============================================
- Coverage     93.06%   93.06%   -0.01%     
  Complexity      763      763              
============================================
  Files            21       21              
  Lines          1788     1787       -1     
============================================
- Hits           1664     1663       -1     
  Misses          124      124              

Impacted Files	Coverage Δ	Complexity Δ
library/Requests/Transport/cURL.php	94.68% <ø> (-0.03%)	66.00 <0.00> (ø)

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[jrfnl]

Rebased without changes to make the PR mergable.

[jrfnl]

Build failure was a hickup in CI, re-ran the build and it's passing now.