fix: add db module version to main go.mod (#11031)

## Description

Using `v0.0.0` breaks things when other modules try to import the SDK. We need to tag another 0.46 alpha once this is merged.

---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/confio/ics23/go v0.6.6
 	github.com/cosmos/btcutil v1.0.4
 	github.com/cosmos/cosmos-proto v1.0.0-alpha6
-	github.com/cosmos/cosmos-sdk/db v0.0.0
+	github.com/cosmos/cosmos-sdk/db v1.0.0-beta.1
 	github.com/cosmos/cosmos-sdk/errors v1.0.0-beta.2
 	github.com/cosmos/go-bip39 v1.0.0
 	github.com/cosmos/iavl v0.17.3