chore(deps): Bump cachix/install-nix-action from V28 to 30 #2948

Job	Run time
test connector (ndc-postgres-12)	2m 52s
test unit	1m 52s
test connector (ndc-postgres-13)	2m 55s
test connector (ndc-postgres-14)	2m 50s
test connector (ndc-postgres-15)	2m 45s
test connector (ndc-postgres-16)	2m 43s
test connector (ndc-postgres on postgres)	2m 42s
test connector (ndc-postgres on citus)	2m 36s
test connector (ndc-postgres on cockroach)	3m 0s
test connector (ndc-postgres on yugabyte)	3m 1s
	27m 16s

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