improv: Adds pydantic-settings for v3 Layer

Author: tkasuz

poetry.lock

@@ -48,6 +48,7 @@ typing-extensions = "^4.11.0"
 aws-xray-sdk = { version = "^2.8.0", optional = true }
 fastjsonschema = { version = "^2.14.5", optional = true }
 pydantic = { version = "^2.4.0", optional = true }
+pydantic-settings = {version = "^2.6.1", optional = true}
 boto3 = { version = "^1.34.32", optional = true }
 redis = { version = ">=4.4,<6.0", optional = true }
 datadog-lambda = { version = ">=4.77,<7.0", optional = true }
@@ -96,6 +97,7 @@ tracer = ["aws-xray-sdk"]
 redis = ["redis"]
 all = [
   "pydantic",
+  "pydantic-settings",
   "aws-xray-sdk",
   "fastjsonschema",
   "aws-encryption-sdk",