chore: update Nx to v21 #6330

Job	Run time
Integration tests (ubuntu-latest)	1m 32s
Integration tests (macos-latest)	48s
Unit tests (ubuntu-latest)	1m 8s
Integration tests (windows-latest)	1m 45s
Format check	36s
Unit tests (macos-latest)	1m 1s
Linter	2m 24s
Unit tests (windows-latest)	1m 28s
E2E tests (ubuntu-latest)	7m 8s
E2E tests (macos-latest)	7m 33s
E2E tests (windows-latest)	13m 10s
Build	1m 27s
Integration tests (ubuntu-latest)	1m 32s
Integration tests (macos-latest)	1m 0s
Unit tests (windows-latest)	1m 28s
Integration tests (windows-latest)	1m 45s
E2E tests (macos-latest)	7m 33s
Unit tests (ubuntu-latest)	1m 8s
Build	1m 27s
E2E tests (ubuntu-latest)	7m 8s
Unit tests (macos-latest)	1m 1s
E2E tests (windows-latest)	13m 10s
Linter	2m 24s
Format check	36s
	1h 20m 12s

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