SealedSecret filter

[babenek]

Description

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

• Add ValueSealedSecretCheck filter
• Fix MyPy issues and stubs
• R1705 fix

How has this been tested?

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

• UnitTest
• Benchmark

[codecov-commenter]

Codecov Report

❌ Patch coverage is 93.91304% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.32%. Comparing base (b6a33d2) to head (7e1be88).

Files with missing lines	Patch %	Lines
credsweeper/scanner/scanner.py	72.72%	2 Missing and 1 partial ⚠️
credsweeper/file_handler/diff_content_provider.py	71.42%	1 Missing and 1 partial ⚠️
credsweeper/deep_scanner/docx_scanner.py	66.66%	0 Missing and 1 partial ⚠️
credsweeper/filters/value_token_base64_check.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #830      +/-   ##
==========================================
+ Coverage   92.29%   92.32%   +0.03%     
==========================================
  Files         145      146       +1     
  Lines        5904     5941      +37     
  Branches      966      973       +7     
==========================================
+ Hits         5449     5485      +36     
- Misses        294      295       +1     
  Partials      161      161              

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