dep: bump thiserror from 1.0.69 to 2.0.9

[V0ldek]

Short description

Manual version of #611 and #614 because Dependabot is dead.

Checklist

All of these should be ticked off before you submit the PR.

• I ran just verify locally and it succeeded.
• Issue was given go ahead and is linked above OR I have included justification for a minor change.
• Unit tests for my changes are included OR no functionality was changed.