Update maximum credits awarded per vote from 8 to 16 #312

Job	Run time
check	0s
cargo-test-sbf (token/program)	2m 9s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	2m 10s
test	0s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	2m 8s
cargo-test-sbf (token-upgrade/program)	2m 8s
cargo-test-sbf (feature-proposal/program)	2m 10s
cargo-test-sbf (governance/addin-mock/program, governance/program)	2m 9s
cargo-test-sbf (memo/program)	2m 11s
cargo-test-sbf (name-service/program)	2m 8s
cargo-test-sbf (stake-pool/program)	2m 9s
cargo-test-sbf (single-pool/program)	2m 8s
	21m 30s

Provide feedback