refactor: rework value mapping for for_each and update dependencies

[SweetOps]

what

• rework value mapping for for_each
• bump minimal required version of TF to 0.14.0
• bump terratest to v0.32.8

why

• terraform has weird limitation which blocks using of dynamic values inside the for_each loop

The "for_each" value depends on resource attributes that cannot be determined
until apply, so Terraform cannot predict how many instances will be created.
To work around this, use the -target argument to first apply only the
resources that the for_each depends on.

[SweetOps]

/test all

[SweetOps]

/test all

[SweetOps]

/test terratest

[SweetOps]

/test bats

[SweetOps]

/test readme

[mergify]

This pull request is now in conflict. Could you fix it @SweetOps? 🙏

[SweetOps]

/test all