🔧 Disable NullDereference clang-tidy check

[burgholzer]

Description

This PR disables the NullDereference clang-tidy check since it led to many false positives.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[github-actions]

Cpp-Linter Report ✔️

No problems need attention.

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[codecov]

Codecov Report

Merging #383 (7c4c636) into main (5634aae) will increase coverage by 0.0%.
The diff coverage is 100.0%.

@@          Coverage Diff          @@
##            main    #383   +/-   ##
=====================================
  Coverage   89.1%   89.1%           
=====================================
  Files         97      97           
  Lines      11712   11708    -4     
  Branches    2103    2101    -2     
=====================================
- Hits       10436   10434    -2     
+ Misses      1276    1274    -2     

Files Changed	Coverage Δ
include/dd/UniqueTable.hpp	100.0% <100.0%> (+1.9%)	⬆️