fix: Update Lambda function runtime to Python 3.11 for RDS and VPC flow log forwarders

Author: smittnacht

README.md

@@ -198,7 +198,7 @@ Examples codified under the [`examples`](https://github.com/terraform-aws-module
 | <a name="input_rds_em_forwarder_role_path"></a> [rds\_em\_forwarder\_role\_path](#input\_rds\_em\_forwarder\_role\_path) | RDS enhanced monitoring forwarder role path | `string` | `null` | no |
 | <a name="input_rds_em_forwarder_role_permissions_boundary"></a> [rds\_em\_forwarder\_role\_permissions\_boundary](#input\_rds\_em\_forwarder\_role\_permissions\_boundary) | The ARN of the policy that is used to set the permissions boundary for the RDS enhanced monitoring forwarder role | `string` | `null` | no |
 | <a name="input_rds_em_forwarder_role_tags"></a> [rds\_em\_forwarder\_role\_tags](#input\_rds\_em\_forwarder\_role\_tags) | A map of tags to apply to the RDS enhanced monitoring forwarder role | `map(string)` | `{}` | no |
-| <a name="input_rds_em_forwarder_runtime"></a> [rds\_em\_forwarder\_runtime](#input\_rds\_em\_forwarder\_runtime) | Lambda function runtime | `string` | `"python3.8"` | no |
+| <a name="input_rds_em_forwarder_runtime"></a> [rds\_em\_forwarder\_runtime](#input\_rds\_em\_forwarder\_runtime) | Lambda function runtime | `string` | `"python3.11"` | no |
 | <a name="input_rds_em_forwarder_security_group_ids"></a> [rds\_em\_forwarder\_security\_group\_ids](#input\_rds\_em\_forwarder\_security\_group\_ids) | List of security group ids when forwarder lambda function should run in the VPC | `list(string)` | `null` | no |
 | <a name="input_rds_em_forwarder_subnet_ids"></a> [rds\_em\_forwarder\_subnet\_ids](#input\_rds\_em\_forwarder\_subnet\_ids) | List of subnet ids when forwarder lambda function should run in the VPC. Usually private or intra subnets | `list(string)` | `null` | no |
 | <a name="input_rds_em_forwarder_tags"></a> [rds\_em\_forwarder\_tags](#input\_rds\_em\_forwarder\_tags) | A map of tags to apply to the RDS enhanced monitoring forwarder resources | `map(string)` | `{}` | no |
@@ -232,7 +232,7 @@ Examples codified under the [`examples`](https://github.com/terraform-aws-module
 | <a name="input_vpc_fl_forwarder_role_path"></a> [vpc\_fl\_forwarder\_role\_path](#input\_vpc\_fl\_forwarder\_role\_path) | VPC flow log forwarder role path | `string` | `null` | no |
 | <a name="input_vpc_fl_forwarder_role_permissions_boundary"></a> [vpc\_fl\_forwarder\_role\_permissions\_boundary](#input\_vpc\_fl\_forwarder\_role\_permissions\_boundary) | The ARN of the policy that is used to set the permissions boundary for the VPC flow log forwarder role | `string` | `null` | no |
 | <a name="input_vpc_fl_forwarder_role_tags"></a> [vpc\_fl\_forwarder\_role\_tags](#input\_vpc\_fl\_forwarder\_role\_tags) | A map of tags to apply to the VPC flow log forwarder role | `map(string)` | `{}` | no |
-| <a name="input_vpc_fl_forwarder_runtime"></a> [vpc\_fl\_forwarder\_runtime](#input\_vpc\_fl\_forwarder\_runtime) | Lambda function runtime | `string` | `"python3.8"` | no |
+| <a name="input_vpc_fl_forwarder_runtime"></a> [vpc\_fl\_forwarder\_runtime](#input\_vpc\_fl\_forwarder\_runtime) | Lambda function runtime | `string` | `"python3.11"` | no |
 | <a name="input_vpc_fl_forwarder_s3_log_bucket_arns"></a> [vpc\_fl\_forwarder\_s3\_log\_bucket\_arns](#input\_vpc\_fl\_forwarder\_s3\_log\_bucket\_arns) | S3 log buckets for VPC flow log forwarder to read and forward to Datadog | `list(string)` | `[]` | no |
 | <a name="input_vpc_fl_forwarder_security_group_ids"></a> [vpc\_fl\_forwarder\_security\_group\_ids](#input\_vpc\_fl\_forwarder\_security\_group\_ids) | List of security group ids when forwarder lambda function should run in the VPC | `list(string)` | `null` | no |
 | <a name="input_vpc_fl_forwarder_subnet_ids"></a> [vpc\_fl\_forwarder\_subnet\_ids](#input\_vpc\_fl\_forwarder\_subnet\_ids) | List of subnet ids when forwarder lambda function should run in the VPC. Usually private or intra subnets | `list(string)` | `null` | no |

variables.tf

@@ -405,7 +405,7 @@ variable "rds_em_forwarder_name" {
 variable "rds_em_forwarder_runtime" {
   description = "Lambda function runtime"
   type        = string
-  default     = "python3.8"
+  default     = "python3.11"
 }
 
 variable "rds_em_forwarder_layers" {
@@ -605,7 +605,7 @@ variable "vpc_fl_forwarder_name" {
 variable "vpc_fl_forwarder_runtime" {
   description = "Lambda function runtime"
   type        = string
-  default     = "python3.8"
+  default     = "python3.11"
 }
 
 variable "vpc_fl_forwarder_layers" {