test: correct isinstance check in webhook integration test (#662) #80

Job	Run time
Code checks / Spell check	6s
Code checks / Actions lint check	37s
Docstrings checks / Docstrings checks	23s
Tests / Integration tests (3.11, ubuntu-latest)	1m 5s
Tests / Integration tests (3.14, ubuntu-latest)	1m 22s
Code checks / Lint check / Lint check (3.12)	13s
Code checks / Lint check / Lint check (3.11)	14s
Code checks / Lint check / Lint check (3.14)	12s
Code checks / Lint check / Lint check (3.13)	11s
Doc checks / Doc checks / Docs check	1m 16s
Code checks / Type check / Type check (3.11)	13s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 1s
Code checks / Type check / Type check (3.13)	13s
Code checks / Type check / Type check (3.14)	12s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	38s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	56s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	50s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	37s
Code checks / Type check / Type check (3.12)	11s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	39s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	43s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 0s
Doc release	0s
Release prepare	0s
Changelog update	0s
PyPI publish	-1s
Doc release post publish	-1s
	12m 50s

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