fix: forbid negative values for trusting period, unbonding period and max clock drift (backport #2555)

[mergify]

This is an automatic backport of pull request #2555 done by Mergify.
Cherry-pick of eab24e8 has failed:

On branch mergify/bp/release/v5.1.x/pr-2555
Your branch is up to date with 'origin/release/v5.1.x'.

You are currently cherry-picking commit eab24e8.
  (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:   CHANGELOG.md

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	deleted by us:   modules/light-clients/07-tendermint/client_state.go
	deleted by us:   modules/light-clients/07-tendermint/client_state_test.go

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

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[colin-axner]

closing since this bug fix isn't essential to backport