Update rules for token bariers

[babenek]

Description

Please include a summary of the change and which is fixed.

• Updated bariers for tokens. Often / is used right with the token in url e.g. /AKIA...
• do not skip *.rst files in scan - they are text
• applied multiprocessing download for benchmark

How has this been tested?

Please describe the tests that you ran to verify your changes.

• UnitTest
• Benchmark

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (1371a70) 90.40% compared to head (b17e8a8) 90.44%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
credsweeper/scanner/scan_type/scan_type.py	91.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #492      +/-   ##
==========================================
+ Coverage   90.40%   90.44%   +0.04%     
==========================================
  Files         127      127              
  Lines        4327     4335       +8     
  Branches      693      695       +2     
==========================================
+ Hits         3912     3921       +9     
+ Misses        274      273       -1     
  Partials      141      141              

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[babenek]

TODO: rollback after Samsung/CredData#66

[xDizzix]