Support newer ESPHome versions with serial_proxy responses

[puddly]

The ESPHome serial_proxy component API has evolved and a few requests now have responses. This allows us to version gate our current workaround of sending ping requests to "flush" the request queue.

[codecov]

Codecov Report

❌ Patch coverage is 94.28571% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 93.66%. Comparing base (fda727a) to head (66555d7).
⚠️ Report is 3 commits behind head on dev.

Files with missing lines	Patch %	Lines
serialx/platforms/serial_esphome.py	94.28%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #118      +/-   ##
==========================================
+ Coverage   92.53%   93.66%   +1.12%     
==========================================
  Files          22       24       +2     
  Lines        3819     4500     +681     
==========================================
+ Hits         3534     4215     +681     
  Misses        285      285              

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