local-cluster: ignore flaky test_duplicate_with_pruned_ancestor #7129

Job	Run time
cargo-test-sbf (token/program)	7m 44s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	15m 37s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	10m 26s
check	3m 0s
cargo-test-sbf (token-upgrade/program)	7m 23s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	17m 51s
cargo-test-sbf (feature-proposal/program)	7m 32s
cargo-test-sbf (governance/addin-mock/program, governance/program)	13m 52s
test (single-pool/cli, single-pool/program)	18m 12s
test (token-upgrade/cli, token-upgrade/program)	16m 40s
cargo-test-sbf (memo/program)	7m 45s
cargo-test-sbf (name-service/program)	7m 45s
cargo-test-sbf (stake-pool/program)	11m 27s
cargo-test-sbf (single-pool/program)	9m 52s
	2h 35m 6s

Provide feedback