`cidr_block` is not a valid option anymore.. it's `ipv4_cidr_block` now

[eldios]

Describe the Bug

The option:

cidr_block         = "10.0.0.0/16"

is not valid anymore.. it has been changed to ipv4_cidr_block now and it's a list of strings, not one string.

Expected Behavior

cidr_block         = "10.0.0.0/16"

should work as per docs and examples

Steps to Reproduce

try to use latest main branch version of the module

Screenshots

No response

Environment

• Module: latest main branch commit
• TF version: tested with v1.4.5

Additional Context

No response

[MajinBuuOnSecurity]

Easier to make a PR #123