chore: update Nx to v21 #6326

Job	Run time
Integration tests (ubuntu-latest)	1m 28s
Unit tests (macos-latest)	1m 12s
Unit tests (windows-latest)	2m 24s
Integration tests (windows-latest)	3m 25s
Build	1m 36s
Unit tests (ubuntu-latest)	1m 16s
E2E tests (windows-latest)	14m 12s
E2E tests (ubuntu-latest)	7m 32s
Integration tests (macos-latest)	1m 29s
E2E tests (macos-latest)	7m 42s
Format check	39s
Linter	5m 36s
	48m 31s

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