[#29] change url field to textfield

[pi-sigma]

Closes #29

[codecov-commenter]

Codecov Report

Merging #30 (b975aa3) into main (f24e9e5) will increase coverage by 0.02%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #30      +/-   ##
==========================================
+ Coverage   97.73%   97.75%   +0.02%     
==========================================
  Files          20       21       +1     
  Lines         441      445       +4     
  Branches       57       57              
==========================================
+ Hits          431      435       +4     
  Misses          6        6              
  Partials        4        4              

Files	Coverage Δ
...s/migrations/0005_alter_outgoingrequestslog_url.py	100.00% <100.00%> (ø)
log_outgoing_requests/models.py	97.64% <100.00%> (ø)

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