Fix broken parallelism in quic-client (#2526) #10964

Job	Run time
check	3m 42s
test (token/cli, token/program, token/program-2022, associated-token-account/program, instruction...	18m 35s
cargo-test-sbf (token/program)	7m 37s
test (single-pool/cli, single-pool/program)	17m 36s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	14m 41s
test (token-upgrade/cli, token-upgrade/program)	16m 39s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	11m 5s
cargo-test-sbf (token-upgrade/program)	8m 22s
cargo-test-sbf (feature-proposal/program)	10m 3s
cargo-test-sbf (governance/addin-mock/program, governance/program)	13m 40s
cargo-test-sbf (memo/program)	8m 7s
cargo-test-sbf (name-service/program)	8m 13s
cargo-test-sbf (stake-pool/program)	11m 42s
cargo-test-sbf (single-pool/program)	10m 7s
	2h 40m 9s

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