Fix parsing of line kpoints in vasp 6.4.3

[jan-janssen]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 82.35294% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 71.58%. Comparing base (fdb5b42) to head (c517ca3).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pyiron_vasp/vasp/parser/outcar.py	82.35%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #70      +/-   ##
==========================================
+ Coverage   71.53%   71.58%   +0.05%     
==========================================
  Files          12       12              
  Lines        2698     2710      +12     
==========================================
+ Hits         1930     1940      +10     
- Misses        768      770       +2     

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