build(deps): bump to v0.50.12 (backport #4529)

[mergify]

Bump to https://github.com/cosmos/cosmos-sdk/releases/tag/v0.50.12

---

This is an automatic backport of pull request #4529 done by Mergify.

[mergify]

Cherry-pick of 0f67259 has failed:

On branch mergify/bp/release/v28.x.y/pr-4529
Your branch is up to date with 'origin/release/v28.x.y'.

You are currently cherry-picking commit 0f67259a.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   go.sum
	modified:   ignite/templates/app/files/go.mod.plush

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   go.mod
	deleted by us:   ignite/templates/typed/simulation.go

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally