build(deps): bump github.com/cosmos/cosmos-sdk from 0.45.1 to 0.45.3 (backport #1247)

[mergify]

This is an automatic backport of pull request #1247 done by Mergify.
Cherry-pick of 1d3c146 has failed:

On branch mergify/bp/release/v1.4.x/pr-1247
Your branch is up to date with 'origin/release/v1.4.x'.

You are currently cherry-picking commit 1d3c146.
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	both modified:   go.mod
	both modified:   go.sum

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[crodriguezvega]

Closing because updating to Cosmos SDK 0.45.3 is going to require bumping the minimum required Go version to 1.17, so we will release this bump in a new minor version.