Marks local-cluster tests with #[serial] (#3466) #12668

Job	Run time
cargo-test-sbf (token/program)	8m 57s
check	3m 14s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	15m 31s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 58s
cargo-test-sbf (token-upgrade/program)	9m 43s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	18m 54s
cargo-test-sbf (feature-proposal/program)	9m 10s
test (single-pool/cli, single-pool/program)	20m 8s
cargo-test-sbf (governance/addin-mock/program, governance/program)	13m 11s
test (token-upgrade/cli, token-upgrade/program)	15m 46s
cargo-test-sbf (memo/program)	8m 11s
cargo-test-sbf (name-service/program)	8m 32s
cargo-test-sbf (stake-pool/program)	12m 29s
cargo-test-sbf (single-pool/program)	9m 41s
	2h 43m 25s

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