Storage uses deprecated `pydantic.config.Extra`

[breid1313]

When using the storage library, there are a lot of warnings from pydantic about the use of deprecated pydantic.config.Extra noting that will be removed in pydantic 3.0. The preferred method is to use string literals.

sample warning message:

PydanticDeprecatedSince20: `pydantic.config.Extra` is deprecated, use literal values instead (e.g. `extra='allow'`). Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.12/migration/
    class VectorBucket(BaseModel, extra=Extra.ignore):

documentation: https://docs.pydantic.dev/latest/api/config/#pydantic.config.ConfigDict.extra

[o-santi]

Fixed by #1334