chore: update Nx to v21 #6340

Job	Run time
Linter	2m 18s
Format check	42s
Integration tests (windows-latest)	1m 33s
Integration tests (ubuntu-latest)	1m 35s
Unit tests (macos-latest)	1m 10s
Unit tests (windows-latest)	1m 28s
Unit tests (ubuntu-latest)	1m 15s
Integration tests (macos-latest)	58s
E2E tests (macos-latest)	7m 22s
E2E tests (windows-latest)	13m 14s
Build	1m 1s
E2E tests (ubuntu-latest)	7m 14s
	39m 50s

Provide feedback