Update default obfuscator regex

[Anilm3]

This PR updates the default obfuscator regex, used if the user-provided regexes are unusable. A test has also been added to ensure some expected patterns are detected.

Related Jiras: APPSEC-53957

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.61%. Comparing base (445c1a8) to head (188354c).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #317   +/-   ##
=======================================
  Coverage   83.61%   83.61%           
=======================================
  Files         137      137           
  Lines        6054     6054           
  Branches     2859     2859           
=======================================
  Hits         5062     5062           
  Misses        369      369           
  Partials      623      623           

Flag	Coverage Δ
waf_test	83.61% <ø> (ø)

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[pr-commenter]

Benchmarks

Benchmark execution time: 2024-07-04 14:04:40

Comparing candidate commit 5e1470e in PR branch anilm3/update-default-key-regex with baseline commit 445c1a8 in branch master.

Found 2 performance improvements and 0 performance regressions! Performance is the same for 17 metrics, 0 unstable metrics.

scenario:lowercase_transformer.random

• 🟩 execution_time [-88.803µs; -83.844µs] or [-4.418%; -4.171%]

scenario:schema_extraction_processor.random

• 🟩 execution_time [-107.698µs; -99.891µs] or [-3.398%; -3.151%]