Improve Link regex performance

[Dreamsorcerer]

Cases to add to test:

'\n\t'*13367 + '\x00'
'\x00="' + '\t'*14436 + '\x00'

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.98%. Comparing base (537125a) to head (0c7994f).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #13306   +/-   ##
=======================================
  Coverage   98.98%   98.98%           
=======================================
  Files         132      132           
  Lines       49055    49055           
  Branches     2552     2552           
=======================================
  Hits        48558    48558           
  Misses        373      373           
  Partials      124      124           

Flag	Coverage Δ
Autobahn	22.13% <0.00%> (ø)
CI-GHA	98.90% <100.00%> (ø)
OS-Linux	98.67% <100.00%> (ø)
OS-Windows	97.02% <100.00%> (-0.01%)	⬇️
OS-macOS	97.93% <100.00%> (+<0.01%)	⬆️
Py-3.10	98.12% <100.00%> (-0.01%)	⬇️
Py-3.11	98.37% <100.00%> (ø)
Py-3.12	98.46% <100.00%> (ø)
Py-3.13	98.44% <100.00%> (-0.01%)	⬇️
Py-3.14	98.46% <100.00%> (ø)
Py-3.14t	97.56% <100.00%> (+<0.01%)	⬆️
Py-pypy-3.11	97.40% <100.00%> (+<0.01%)	⬆️
VM-macos	97.93% <100.00%> (+<0.01%)	⬆️
VM-ubuntu	98.67% <100.00%> (ø)
VM-windows	97.02% <100.00%> (-0.01%)	⬇️
cython-coverage	37.97% <0.00%> (ø)

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[Dreamsorcerer]

Potential fix for second one:
r"^\s*(\S+)\s*=\s*(?:(['\"])(.*?)(\2)|(\S*))\s*$"

[codspeed-hq]

Merging this PR will not alter performance

✅ 84 untouched benchmarks
⏩ 83 skipped benchmarks¹

---

_{Comparing Dreamsorcerer-patch-2 (0c7994f) with master (537125a)}

Footnotes

1. 83 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩