Fix test examples qat resnet18

[AlexanderDokuchaev]

Changes

• Fix requirements.txt to actual version
• Set int8_top reference to mean from 10 runs ( min: 56.527 max: 56.913) = 56.7721

Reason for changes

Failed nightly test

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.58%. Comparing base (edd397b) to head (118b07d).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2566      +/-   ##
===========================================
- Coverage    90.83%   84.58%   -6.25%     
===========================================
  Files          498      498              
  Lines        45621    45576      -45     
===========================================
- Hits         41438    38552    -2886     
- Misses        4183     7024    +2841     

see 56 files with indirect coverage changes

Flag	Coverage Δ
COMMON	42.77% <ø> (+0.03%)	⬆️
ONNX	34.78% <ø> (+<0.01%)	⬆️
OPENVINO	∅ <ø> (∅)
TENSORFLOW	29.59% <ø> (+<0.01%)	⬆️
TORCH	66.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
common	93.10% <ø> (-0.66%)	⬇️
torch	93.43% <ø> (ø)
tensorflow	93.72% <ø> (ø)
onnx	93.05% <ø> (ø)
openvino	25.58% <ø> (-68.49%)	⬇️
ptq	67.31% <ø> (-20.43%)	⬇️

[AlexanderDokuchaev]

nightly/job/test_examples/292/

[alexsu52]

LGTM