ci: add global concurrency group for E2E tests #201

Job	Run time
PR title check	6s
Code checks / Actions lint check	28s
Tests / Integration tests (3.14, ubuntu-latest)	1m 51s
Code checks / Spell check	5s
Doc checks / Doc checks / Docs check	1m 6s
Code checks / Type check / Type check (3.14)	10s
Code checks / Type check / Type check (3.13)	9s
Code checks / Type check / Type check (3.12)	12s
Code checks / Type check / Type check (3.11)	10s
Code checks / Lint check / Lint check (3.13)	9s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	1m 0s
Code checks / Lint check / Lint check (3.11)	11s
Tests / E2E tests (3.10, ubuntu-latest)	4m 34s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	51s
Tests / Integration tests (3.10, ubuntu-latest)	1m 13s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	2m 1s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 33s
Code checks / Type check / Type check (3.10)	11s
Code checks / Lint check / Lint check (3.14)	12s
Tests / E2E tests (3.14, ubuntu-latest)	4m 41s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 28s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	57s
Code checks / Lint check / Lint check (3.10)	12s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	1m 27s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 29s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	52s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	51s
Code checks / Lint check / Lint check (3.12)	9s
	28m 18s

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