Release 1.3.0

[Mockird31]

Adds support for maximum decimal precision on Tarantool 3.5+ and drops
Python 3.6. Also fixes ConnectionPool idle CPU usage and recovery after
a cluster restart.

Changed

• Drop Python 3.6 support (PR ci: fix download artifact vulnerability #327).
• Support the maximum decimal precision for tarantool 3.5 and above (PR Fix ci and update max decimal precision #342).

Fixed

• Set upper bound for version of setuptools (PR Fix ci and update max decimal precision #342).
• Reduce idle CPU usage in ConnectionPool while waiting for
  queued requests (PR connection_pool: fix excessive idle CPU usage while waiting for requests #336).
• Recover ConnectionPool instances after a cluster restart
  (PR connection_pool: recover instances after a cluster restart #343).
• Fix typo in the name: PoolTolopogy -> PoolTopology. Ensured
  backward compatibility using aliases (PR pool: fix pool topology error names #345).