go.mod: go get github.com/zclconf/go-cty@v1.11.0

[apparentlymart]

This fixes a possible panic in what Terraform calls the "flatten" function in situations where a user passes in a null value of a sequence type. The function will now treat that the same as a null value of any other type.

This also includes some other changes that would benefit Terraform:

• cty: Improved performance when comparing nonzero numbers to zero, by performing a relatively-cheap sign check on both numbers before falling back on the more expensive general equality implementation. (#125)
• convert: Unify will no longer panic when asked to find a common base type for a tuple type and a list of unknown element type, and will instead just signal that such a unification is not possible. (#126)

Also notable is that this new release of cty now requires Go 1.18 or later. That's okay for backport into Terraform v1.2, since that release already uses Go 1.18, but this would not be backportable to older Terraform CLI releases. Our backport policy doesn't typically require us to go back further than one minor release anyway (aside from exceptional cases such as security advisories) and so I think this is a moot point, but I mention it for completeness.

Fixes #31376.

[github-actions]

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[github-actions]

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