ci: Remove E2E tests concurrency group to allow parallel matrix jobs #260

Job	Run time
PR title check	5s
Tests / E2E tests (3.14, ubuntu-latest)	4m 41s
Tests / E2E tests (3.10, ubuntu-latest)	4m 6s
Code checks / Actions lint check	29s
Code checks / Spell check	6s
Doc checks / Doc checks / Docs check	1m 1s
Tests / Integration tests (3.14, ubuntu-latest)	1m 57s
Tests / Integration tests (3.10, ubuntu-latest)	2m 40s
Code checks / Lint check / Lint check (3.13)	15s
Code checks / Lint check / Lint check (3.12)	14s
Code checks / Lint check / Lint check (3.10)	15s
Code checks / Lint check / Lint check (3.14)	10s
Code checks / Lint check / Lint check (3.11)	14s
Code checks / Type check / Type check (3.13)	17s
Code checks / Type check / Type check (3.14)	16s
Code checks / Type check / Type check (3.12)	15s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.14)	1m 1s
Code checks / Type check / Type check (3.11)	11s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.11)	53s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.12)	56s
Tests / Unit tests / Unit tests (windows-latest, 3.11)	1m 54s
Tests / Unit tests / Unit tests (windows-latest, 3.13)	1m 39s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.13)	55s
Tests / Unit tests / Unit tests (ubuntu-latest, 3.10)	58s
Tests / Unit tests / Unit tests (windows-latest, 3.10)	1m 18s
Tests / Unit tests / Unit tests (windows-latest, 3.14)	2m 2s
Tests / Unit tests / Unit tests (windows-latest, 3.12)	1m 26s
Code checks / Type check / Type check (3.10)	13s
	30m 27s

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