update pycocotools/lvis to mm

[xvjiarui]

No description provided.

[codecov]

Codecov Report

Merging #3727 into master will decrease coverage by 0.02%.
The diff coverage is 48.48%.

@@            Coverage Diff             @@
##           master    #3727      +/-   ##
==========================================
- Coverage   61.05%   61.03%   -0.03%     
==========================================
  Files         216      216              
  Lines       15320    15351      +31     
  Branches     2609     2622      +13     
==========================================
+ Hits         9354     9369      +15     
- Misses       5500     5512      +12     
- Partials      466      470       +4     

Flag	Coverage Δ
#unittests	61.03% <48.48%> (-0.03%)	⬇️

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Impacted Files	Coverage Δ
mmdet/datasets/lvis.py	14.18% <0.00%> (-0.21%)	⬇️
mmdet/models/backbones/res2net.py	82.67% <52.00%> (-7.62%)	⬇️
mmdet/datasets/coco.py	45.63% <60.00%> (+0.24%)	⬆️

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