ci: Add nightly OpenAPI spec sync and make model codegen reproducible #966

Job	Run time
PR title check	7s
Checks / Actions lint check	30s
Checks / Markdown lint check	31s
Checks / Image lint check	6s
Checks / Docstrings check	17s
Checks / Spell check	7s
Checks / Package check	15s
Checks / Website lint check	1m 57s
Checks / Models check	17s
Checks / Integration tests (3.11, ubuntu-latest)	2m 49s
Checks / Integration tests (3.14, ubuntu-latest)	2m 57s
Checks / Lint check / Lint check (3.12)	13s
Checks / Doc check / Docs check	1m 18s
Checks / Lint check / Lint check (3.11)	14s
Checks / Type check / Type check (3.12)	12s
Checks / Type check / Type check (3.14)	1m 55s
Checks / Lint check / Lint check (3.14)	15s
Checks / Lint check / Lint check (3.13)	14s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.11)	45s
Checks / Type check / Type check (3.13)	12s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.12)	54s
Checks / Type check / Type check (3.11)	12s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.13)	48s
Checks / Unit tests / Unit tests (ubuntu-latest, 3.14)	44s
Checks / Unit tests / Unit tests (windows-latest, 3.11)	1m 26s
Checks / Unit tests / Unit tests (windows-latest, 3.12)	1m 10s
Checks / Unit tests / Unit tests (windows-latest, 3.13)	1m 15s
Checks / Unit tests / Unit tests (windows-latest, 3.14)	1m 6s
	22m 46s

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