add Python 3.11 to test matrix

[jairhenrique]

• add python 3.11 to test matrix
• improve ci cache

[codecov]

Codecov Report

Merging #215 (390720a) into master (a4d740d) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #215   +/-   ##
=======================================
  Coverage   99.57%   99.57%           
=======================================
  Files          11       11           
  Lines         952      952           
  Branches      153      196   +43     
=======================================
  Hits          948      948           
  Misses          1        1           
  Partials        3        3           

Impacted Files	Coverage Δ
dataclasses_avroschema/fields.py	99.40% <100.00%> (ø)
dataclasses_avroschema/types.py	100.00% <100.00%> (ø)

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[marcosschroh]

Thanks @jairhenrique