Coordinate switch in message pack encoding for large integers with Terraform core

[bendbennett]

terraform-plugin-go version

v0.22.1

An issue describing that Planned value does not match config value for number on Terraform core has resulted in a fix in cty in v1.14.4 (refer to hashicorp/terraform#34866 (comment)). The fix was to change the MessagePack encoder to use a different encoding for large integers. This should fix the core-to-provider direction in terraform-plugin-go, but equivalent changes will need to implemented in this repository for the provider-to-core direction.

The changes to Terraform core and terraform-plugin-go should be coordinated to minimise any time during which encodings differ for Terraform core and terraform-plugin-go.

References

• Planned value does not match config value for number terraform#34866
• zclconf/go-cty@f41ae52