Bug: ConfluentConfig TypeDict uses Enums instead of enum values

[yann-combarnous]

Describe the bug
When we create a ConfluentConfig dictionnary and connect to Kafka, the following config works, but generates a type error in Pylance/Pyright:

config: ConfluentConfig = {
    "security.protocol": "sasl_ssl",
    "sasl.oauthbearer.method": "oidc",
    "debug": "msg",
     ...
}

When we correct the type error by using the enums for these properties, then connecting to Kafka fails, as the code does not expect enums but Literal

from faststream.confluent.config import ConfluentConfig, SASLOAUTHBearerMethod, SecurityProtocol, Debug
...

config: ConfluentConfig = {
    "security.protocol": SecurityProtocol.sasl_ssl,
    "sasl.oauthbearer.method": SASLOAUTHBearerMethod.oidc,
    "debug": Debug.msg,
     ...
}

How to reproduce
Include source code:

See above

Environment
Running FastStream 0.5.20 with CPython 3.12.4 on Darwin