build(deps): Bump google.golang.org/grpc from 1.69.4 to 1.70.0 in /store #78416

Job	Run time
test-core	32s
test-coretesting	34s
split-test-files	18s
test-clientv2	45s
test-integration	5m 30s
test-sim-nondeterminism	5m 5s
test-depinject	32s
test-errors	35s
test-indexer-postgres	30s
test-schema	35s
test-schema-testing	28s
test-math	33s
test-simapp-v2	5m 49s
test-collections	32s
test-confix	33s
test-collections-protocodec	32s
test-cosmovisor	43s
test-hubl	34s
test-log	30s
test-orm	36s
test-store	1m 48s
test-store-v2	29s
test-x-accounts	41s
test-x-accounts-base	39s
test-x-accounts-lockup	32s
test-x-accounts-multisig	28s
test-x-nft	30s
test-x-tx	36s
test-x-authz	31s
test-x-bank	31s
test-x-circuit	34s
test-x-distribution	39s
test-x-epochs	31s
test-x-feegrant	40s
test-x-evidence	30s
test-x-gov	34s
test-x-group	33s
test-x-mint	31s
test-x-protocolpool	40s
test-x-slashing	39s
test-x-staking	32s
test-x-upgrade	44s
test-tools-benchmark	44s
test-x-consensus	34s
tests (00)	8m 7s
tests (01)	3m 37s
tests (02)	3m 45s
tests (03)	4m 17s
repo-analysis	1m 37s
	1h 2m 19s

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