bump nanobind submodule version

[Griger5]

No description provided.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.92%. Comparing base (cacc8d4) to head (4a7a8fd).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #481   +/-   ##
=======================================
  Coverage   91.92%   91.92%           
=======================================
  Files          56       56           
  Lines        2564     2564           
  Branches      144      144           
=======================================
  Hits         2357     2357           
  Misses        132      132           
  Partials       75       75           

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