Update timestamp conversion in client

[markovamaria]

Reverting of str converting for "timestamp" to avoid error "str object has no attribute timestamp"
Resolves: #209

[markovamaria]

@filipecosta90 , looks like CI failure related to " aws-region: ${{ secrets.AWS_REGION }} " line in yml file, could you please help me to resolve it?

[slice4e]

@filipecosta90 , looks like CI failure related to " aws-region: ${{ secrets.AWS_REGION }} " line in yml file, could you please help me to resolve it?

@markovamaria This is because you are doing the pull request from markovamaria fork. Instead, work directly in the main fork.
In other words, make a pull request into redis:main from redis:cli_timestamp_fix.

[markovamaria]

added PR w/o fork #211