Update db and maintiner excel tools

[trappitsch]

• update db to 2026-05-19 version of SiC db
• update maintainer tools: astromat dois are not with IEDA anymore, just assume astromat if not zenodo in DOI

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.60%. Comparing base (60b9f02) to head (88922fb).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #145      +/-   ##
==========================================
- Coverage   95.60%   95.60%   -0.01%     
==========================================
  Files          19       19              
  Lines         933      932       -1     
==========================================
- Hits          892      891       -1     
  Misses         41       41              

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