⬆️ require pybind11 >= 2.13.5

[burgholzer]

Description

This small PR updates the requirement on pybind11 to 2.13.5 which contains a fix for some relative paths that could trip up compilers.

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.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.1%. Comparing base (28dc65e) to head (c045b74).
Report is 115 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main    #679   +/-   ##
=====================================
  Coverage   87.0%   87.1%           
=====================================
  Files        125     125           
  Lines      13781   13780    -1     
  Branches    2164    2164           
=====================================
+ Hits       11995   12006   +11     
+ Misses      1786    1774   -12     

Flag	Coverage Δ
cpp	86.7% <ø> (+<0.1%)	⬆️
python	99.7% <ø> (ø)

see 2 files with indirect coverage changes