rescue IO::TimeoutError raised by Ruby since 3.2.0 on blocking reads/writes #973
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One scenario in which this happens is when a firewall silently drops connections between clients and memcached instances.
With this patch the client reopens the connection and the request succeeds. Without it, IO:TimeoutError is raised for the application to handle which deviates from Dalli behavior under Ruby 3.1 and earlier.
Addresses #967 and fixes the remaining lint in #968