Add support for Terraform v1.10

[wata727]

Introduction

Terraform v1.10 added the following features related to TFLint.

• Ephemeral Values
  • Experiment: Ephemeral input variables, and the terraform.applying symbol hashicorp/terraform#35273
  • lang: Experimental "ephemeralasnull" function hashicorp/terraform#35363
  • lang: stabilise ephemeral values experiment hashicorp/terraform#35636
  • ephemeral resource addresses and interface definitions hashicorp/terraform#35727
  • Add ephemeral resources to the Terraform language hashicorp/terraform#35728
• issensitive must return unknown for unknown args without sensitive hashicorp/terraform#36012
• The element function now accepts negative indices
  • update go-cty@v1.15.0 hashicorp/terraform#35501

Proposal

Update the embedded Terraform fork to v1.10.

A major change to the Terraform language is support for expressions like ephemeral.foo.bar, but these are parsable as managed resources so explicit support may not be needed.

References

• https://github.com/hashicorp/terraform/releases/tag/v1.10.0
• Add support for Terraform v1.9 #2075