fix: Eliminate race condition in _fetch_requests_from_url #221

Job	Run time
Tests / Integration tests (3.10, ubuntu-latest)	1m 26s
PR title check	6s
Code checks / Spell check	4s
Code checks / Actions lint check	28s
Tests / Integration tests (3.14, ubuntu-latest)	1m 39s
Doc checks / Doc checks / Docs check	1m 6s
Tests / E2E tests (3.14, ubuntu-latest)	5m 48s
Code checks / Lint check / Lint check (3.13)	12s
Code checks / Lint check / Lint check (3.11)	10s
Code checks / Type check / Type check (3.11)	10s
Code checks / Lint check / Lint check (3.10)	11s
Code checks / Type check / Type check (3.13)	12s
Code checks / Lint check / Lint check (3.14)	14s
Code checks / Type check / Type check (3.12)	10s
Code checks / Type check / Type check (3.14)	11s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 35s
Code checks / Lint check / Lint check (3.12)	13s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	55s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	56s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 22s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	56s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	54s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	56s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 20s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 35s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 36s
Tests / E2E tests (3.10, ubuntu-latest)	5m 11s
Code checks / Type check / Type check (3.10)	15s
	29m 51s

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