update vpc terragrunt module to aws 6.27

[marcoieni]

Plan looks good:

13:33:37.385 STDOUT terraform:   # aws_nat_gateway.nat["use1-az1"] will be updated in-place
13:33:37.385 STDOUT terraform:   ~ resource "aws_nat_gateway" "nat" {
13:33:37.385 STDOUT terraform:         id                                 = "nat-0a9737ab8653a88a0"
13:33:37.385 STDOUT terraform:       + regional_nat_gateway_address       = (known after apply)
13:33:37.385 STDOUT terraform:         tags                               = {
13:33:37.385 STDOUT terraform:             "Name" = "docs-rs-staging--nat-use1-az1"
13:33:37.385 STDOUT terraform:         }
13:33:37.385 STDOUT terraform:         # (14 unchanged attributes hidden)
13:33:37.385 STDOUT terraform:     }
13:33:37.385 STDOUT terraform:   # aws_nat_gateway.nat["use1-az2"] will be updated in-place
13:33:37.385 STDOUT terraform:   ~ resource "aws_nat_gateway" "nat" {
13:33:37.385 STDOUT terraform:         id                                 = "nat-00ce64642bba997c1"
13:33:37.385 STDOUT terraform:       + regional_nat_gateway_address       = (known after apply)
13:33:37.385 STDOUT terraform:         tags                               = {
13:33:37.385 STDOUT terraform:             "Name" = "docs-rs-staging--nat-use1-az2"
13:33:37.385 STDOUT terraform:         }
13:33:37.385 STDOUT terraform:         # (14 unchanged attributes hidden)
13:33:37.385 STDOUT terraform:     }
13:33:37.386 STDOUT terraform: Plan: 0 to add, 2 to change, 0 to destroy.