update default logger to INFO

[ohadlevy]

I've notice my log contains a lot of information regarding OCPP
This PR suggest to reduce the amount of logs for a regular HA
environment.

[codecov]

Codecov Report

Merging #520 (1fdfadc) into main (b6972b2) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #520   +/-   ##
=======================================
  Coverage   89.51%   89.51%           
=======================================
  Files          10       10           
  Lines        1268     1268           
  Branches      193      193           
=======================================
  Hits         1135     1135           
  Misses         73       73           
  Partials       60       60           

Impacted Files	Coverage Δ
custom_components/ocpp/__init__.py	93.18% <100.00%> (ø)
custom_components/ocpp/api.py	85.71% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b6972b2...1fdfadc. Read the comment docs.