Accept float values for socket_timeout

[kajinamit]

The socket_timeout argument of redis client supports not only integers but also floats. This allows users to pass float values[1].

[1] https://github.com/redis/redis-py/blob/1b2f408259/redis/connection.py#L1206

[tobias-urdin]

@mergifyio rebase

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[tobias-urdin]

@Mergifyio rebase

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