fix(jetbrains): update Terraform version requirement to 1.9+

[matifali]

Summary

• Updated required_version constraint from >= 1.0 to >= 1.9 in jetbrains module
• Added inline comment explaining the cross-variable validation requirement
• Bumped module version from 1.1.0 to 1.1.1 (patch version)

Issue

The jetbrains module uses cross-variable validation at line 169-171 where var.options is referenced within the var.ide_config validation block:

validation {
  condition = alltrue([
    for code in var.options : contains(keys(var.ide_config), code)
  ])
  error_message = "The ide_config must be a superset of var.options."
}

This pattern requires Terraform 1.9+ and fails on earlier versions with:

Error: Invalid reference in variable validation
The condition for variable "ide_config" can only refer to the variable itself, using var.ide_config.

References

• Terrafomr release blog that talks abut this feature: https://www.hashicorp.com/en/blog/terraform-1-9-enhances-input-variable-validations
• Terraform PR that added this feature: terraform: Stabilize the variable_validation_crossref experiment hashicorp/terraform#34955
• HashiCorp Support Article: https://support.hashicorp.com/hc/en-us/articles/43291233547027

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