feat: latest instance types

We don't like waiting for our AMIs to finish building :)

Author: jonanderson10

images/linux-al2023/github_agent.linux.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "m3.medium"
+  default     = "c8i-flex.large"
 }
 
 variable "iam_instance_profile" {

images/ubuntu-focal/github_agent.ubuntu.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t3.medium"
+  default     = "c8i-flex.large"
 }
 
 variable "iam_instance_profile" {

images/ubuntu-jammy-arm64/github_agent.ubuntu.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t4g.small"
+  default     = "c8g.large"
 }
 
 variable "iam_instance_profile" {

images/ubuntu-jammy/github_agent.ubuntu.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t3.medium"
+  default     = "c8i-flex.large"
 }
 
 variable "iam_instance_profile" {

images/ubuntu-noble-arm64/github_agent.ubuntu.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t4g.small"
+  default     = "c8g.large"
 }
 
 variable "iam_instance_profile" {

images/ubuntu-noble/github_agent.ubuntu.pkr.hcl

@@ -39,7 +39,7 @@ variable "associate_public_ip_address" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t3.medium"
+  default     = "	c8i-flex.large"
 }
 
 variable "iam_instance_profile" {

images/windows-core-2019/github_agent.windows.pkr.hcl

@@ -21,7 +21,7 @@ variable "region" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "t3a.medium"
+  default     = "c8i-flex.xlarge"
 }
 
 variable "iam_instance_profile" {

images/windows-core-2022/github_agent.windows.pkr.hcl

@@ -21,7 +21,7 @@ variable "region" {
 variable "instance_type" {
   description = "The instance type Packer will use for the builder"
   type        = string
-  default     = "m4.xlarge"
+  default     = "c8i-flex.xlarge"
 }
 
 variable "iam_instance_profile" {

images/windows-core-2025/github_agent.windows.pkr.hcl

@@ -19,9 +19,9 @@ variable "region" {
 }
 
 variable "instance_type" {
-  description = "The instance type Packer will use for the builder"
+  description = "The instance type Packer will use for the builder, requires UEFI/nitro instance support"
   type        = string
-  default     = "m4.xlarge"
+  default     = "c8i-flex.xlarge"
 }
 
 variable "iam_instance_profile" {