chore(x/upgrade): Use `cosmossdk.io/core/codec` instead of `github.com/cosmos/cosmos-sdk/codec` #77508

Job	Run time
split-test-files	15s
test-integration	5m 57s
test-clientv2	32s
test-core	25s
test-coretesting	23s
test-sim-nondeterminism	25s
test-depinject	28s
test-errors	35s
test-indexer-postgres	27s
test-math	35s
test-schema	32s
test-schema-testing	29s
test-collections	27s
test-collections-protocodec	25s
test-confix	26s
test-cosmovisor	30s
test-orm	24s
test-simapp-v2	13m 19s
test-hubl	34s
test-log	30s
test-store	24s
test-store-v2	21s
test-x-accounts	27s
test-x-accounts-base	25s
test-x-accounts-lockup	26s
test-x-authz	24s
test-x-accounts-multisig	23s
test-x-circuit	25s
test-x-distribution	25s
test-x-feegrant	28s
test-x-evidence	27s
test-x-gov	27s
test-x-group	25s
test-x-protocolpool	33s
test-x-nft	32s
test-x-slashing	25s
test-x-staking	42s
test-x-tx	24s
test-x-upgrade	40s
test-tools-benchmark	33s
test-x-bank	41s
test-x-consensus	33s
test-x-epochs	25s
test-x-mint	35s
tests (00)	8m 18s
tests (01)	3m 38s
tests (02)	3m 51s
tests (03)	4m 18s
repo-analysis	41s
	59m 54s

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