Fix parsing of ssh userinfo

[seachicken]

Fix an issue where git remote -v did not work if the URL was origin hoge-1@github.com:org/repo (fetch)

[codecov[bot]]

Codecov Report

Merging #110 (8752c71) into main (ef9790c) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #110   +/-   ##
=======================================
  Coverage   81.78%   81.78%           
=======================================
  Files           5        5           
  Lines         763      763           
=======================================
  Hits          624      624           
  Misses        115      115           
  Partials       24       24           

Files Changed	Coverage Δ
shared/remote.go	87.50% <ø> (ø)