Run mypy with PyTorch 1.12

[carmocca]

What does this PR do?

Upgrade the mypy job to run with torch==1.12

Does your PR introduce any breaking changes? If yes, please list them.

None

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• [n/a] Did you write any new necessary tests? (not for typos and docs)
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• Did you list all the breaking changes introduced by this pull request?
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PR review

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cc @carmocca @akihironitta @Borda

[codecov]

Codecov Report

Merging #14044 (50fe3ac) into master (91dd6a6) will increase coverage by 15%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master   #14044     +/-   ##
=========================================
+ Coverage      61%      76%    +15%     
=========================================
  Files         323      323             
  Lines       26319    26356     +37     
=========================================
+ Hits        16107    20117   +4010     
+ Misses      10212     6239   -3973