ci: avoid branch clash in regenerate-models workflow #667

Job	Run time
Docstrings checks / Docstrings checks	15s
PR title check	5s
Code checks / Spell check	8s
Code checks / Actions lint check	30s
Tests / Integration tests (3.11, ubuntu-latest)	2m 26s
Tests / Integration tests (3.14, ubuntu-latest)	2m 31s
Package check / Package check	21s
Code checks / Lint check / Lint check (3.11)	10s
Code checks / Type check / Type check (3.13)	13s
Code checks / Type check / Type check (3.14)	14s
Code checks / Lint check / Lint check (3.13)	12s
Code checks / Lint check / Lint check (3.12)	11s
Code checks / Type check / Type check (3.11)	10s
Doc checks / Doc checks / Docs check	1m 16s
Code checks / Lint check / Lint check (3.14)	12s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	45s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	48s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 30s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	47s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 5s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 7s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 57s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	45s
Code checks / Type check / Type check (3.12)	13s
	17m 51s

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