Fix connections_max_idle_ms propagation to connection instance.

[tvoinarovskyi]

No description provided.

[codecov]

Codecov Report

Merging #299 into master will decrease coverage by 0.84%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #299      +/-   ##
==========================================
- Coverage   98.44%   97.59%   -0.85%     
==========================================
  Files          21       21              
  Lines        3015     3164     +149     
==========================================
+ Hits         2968     3088     +120     
- Misses         47       76      +29

Impacted Files	Coverage Δ
aiokafka/consumer/consumer.py	99.28% <ø> (ø)	⬆️
aiokafka/client.py	98.14% <ø> (ø)	⬆️
aiokafka/producer/producer.py	97.5% <ø> (ø)	⬆️
aiokafka/conn.py	85.71% <0%> (-13.68%)	⬇️
aiokafka/record/legacy_records.py	98.95% <0%> (-0.3%)	⬇️

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