IVS-849 version bump for syntax

[aothms]

To include IfcOpenShell/step-file-parser@9400d24

[Ghesselink]

All good.

(venv) (base) root@demo-translations:~/validate/backend# python -m ifcopenshell.simple_spf --json "$FIXTURE"
[
  {
    "type": "unexpected_character",
    "lineno": 1,
    "column": 1,
    "found_type": "character",
    "found_value": "0xfeff",
    "expected": [],
    "line": "\ufeffISO-10303-21;",
    "message": "On line 1 column 1:\nUnexpected character ('0xfeff')\nExpecting one of \n00001 | \ufeffISO-10303-21;\n        ^"
  }

• I've added an extra check to the django test suite. 623faae (check is failing due to commit seconds afterwards)
• Replaced -f (freshen) with -o (overwrite) in the Makefile. This makes it a bit easier to try out new ifcopenshell updates locally 92cb4f5