Unknown configuration property 'log_group_name' after upgrade to 2.30.0

Describe the question/issue

We recently upgraded from 2.19 to 2.30 and have started receiving this error when deploying our services:

[2023/11/13 17:33:10] [error] [config] datadog: unknown configuration property 'log_group_name'. The following properties are allowed: compress, apikey, dd_service, dd_source, dd_tags, proxy, include_tag_key, tag_key, dd_message_key, provider, and json_date_key.

Nothing about our configuration has changed, though we are also switching from amd64 to arm64. Prior to moving to 2.30.0, we were experiencing issues during service startup with SIGTERM errors that were reported in other issues to have been resolved in 2.30.0. Since making that change, the SIGTERMs have been resolved leaving us with this newest problem.

Configuration

I've provided what I can regarding the datadog/fluent bit configuration from the CF template:

"LogConfiguration": {
       "LogDriver": "awsfirelens",
       "Options": {
        "Name": "datadog",
        "Host": "http-intake.logs.datadoghq.com",
        "dd_service": "refapp",
        "dd_source": "arn:aws:ecr:us-east-1:{account}:repository/{source}",
        "dd_message_key": "log",
        "dd_tags": "env:dev",
        "log_group_name": "firelens-fluent-bit",
        "log_stream_prefix": "from-fluent-bit",
        "apikey": "__SECRET__",
        "tls": "on",
        "provider": "ecs"
       }
      }
...
 {
  "Environment": [
   {
    "Name": "ECS_FARGATE",
    "Value": "true"
   },
   {
    "Name": "DD_API_KEY",
    "Value": "__SECRET__"
   },
   {
    "Name": "DD_APM_ENABLED",
    "Value": "true"
   },
   {
    "Name": "DD_APM_NON_LOCAL_TRAFFIC",
    "Value": "true"
   },
   {
    "Name": "DD_DOGSTATSD_NON_LOCAL_TRAFFIC",
    "Value": "true"
   },
   {
    "Name": "DD_PROCESS_AGENT_ENABLED",
    "Value": "true"
   },
   {
    "Name": "DD_SYSTEM_PROBE_ENABLED",
    "Value": "true"
   },
   {
    "Name": "DD_TRACE_ANALYTICS_ENABLED",
    "Value": "true"
   },
   {
    "Name": "DD_EXPVAR_PORT",
    "Value": "6000"
   }
  ],
  "Essential": true,
  "Image": "datadog/agent",
  "Name": "datadog_agent",
  "PortMappings": [
   {
    "ContainerPort": 8126,
    "HostPort": 8126,
    "Protocol": "tcp"
   },
   {
    "ContainerPort": 8125,
    "HostPort": 8125,
    "Protocol": "udp"
   }
  ]
 },
 {
  "Essential": true,
  "FirelensConfiguration": {
   "Options": {
    "enable-ecs-log-metadata": "true",
    "config-file-type": "file",
    "config-file-value": "/fluent-bit/configs/parse-json.conf"
   },
   "Type": "fluentbit"
  },
  "Image": {
   "Ref": "SsmParameterValueawsserviceawsforfluentbit2300C96584B6F00A464EAD1953AFF4B05118Parameter"
  },
  "LogConfiguration": {
   "LogDriver": "awslogs",
   "Options": {
    "awslogs-group": {
     "Ref": "ecspatternrefappwebapiv48955refappwebapiv48955taskdeflogrouterLogGroupBF9700B1"
    },
    "awslogs-stream-prefix": "firelens",
    "awslogs-region": "us-east-1"
   }
  },
  "Name": "log_router"
 }

Fluent Bit Version Info

2.30.0

Cluster Details

ECS on Fargate

aws / aws-for-fluent-bit