add priority fee ix to mev-claim #421

Job	Run time
cargo-test-sbf (token/program)	11m 3s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	22m 55s
check	0s
test	0s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	16m 23s
cargo-test-sbf (token-upgrade/program)	11m 16s
cargo-test-sbf (feature-proposal/program)	13m 17s
cargo-test-sbf (governance/addin-mock/program, governance/program)	20m 47s
cargo-test-sbf (memo/program)	11m 15s
cargo-test-sbf (name-service/program)	13m 56s
cargo-test-sbf (stake-pool/program)	18m 48s
cargo-test-sbf (single-pool/program)	13m 12s
	2h 32m 52s

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