Fixing linter errors - result from conflict resolution

Updating lib version to 8.0.0b1

Updating lib version to 7.4.0

Updating lib version to 7.3.0

Updating lib version to 7.2.1

Updating server version to 7.2.0

Updating lib version to 7.1.1

Changing current version to 8.4 as it is already GA (redis#3854)

Updating redis-py package version to 7.0.1

Updating package version to 7.0.0 and supported redis versions in rea…

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