test(test/systemtests): Add GasImprovement test #76484

Job	Run time
split-test-files	13s
test-integration	6m 44s
test-system	13m 25s
test-clientv2	28s
test-core	28s
test-sim-nondeterminism	5m 4s
test-coretesting	26s
test-depinject	31s
test-errors	28s
test-math	33s
test-schema	25s
test-indexer-postgres	23s
test-schema-testing	21s
test-simapp	1m 6s
test-simapp-v2	5m 36s
test-collections	22s
test-collections-protocodec	21s
test-confix	26s
test-cosmovisor	21s
test-orm	26s
test-hubl	32s
test-log	31s
test-store	35s
test-store-v2	39s
test-x-accounts	35s
test-x-accounts-lockup	31s
test-x-accounts-base	25s
test-x-accounts-multisig	19s
test-x-tx	24s
test-x-circuit	29s
test-x-distribution	39s
test-x-evidence	35s
test-x-feegrant	28s
test-x-nft	29s
test-x-protocolpool	26s
test-x-gov	28s
test-x-group	40s
test-x-params	27s
test-x-slashing	36s
test-x-upgrade	34s
test-tools-benchmark	34s
test-x-authz	25s
test-x-epochs	28s
test-x-bank	33s
test-x-consensus	26s
test-x-mint	27s
test-x-staking	28s
tests (00)	8m 53s
tests (01)	3m 48s
tests (02)	4m 6s
tests (03)	4m 22s
repo-analysis	37s
	1h 13m 36s

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