Bump matplotlib from 3.6.1 to 3.6.2 (#3159)

Bumps [matplotlib](https://github.com/matplotlib/matplotlib) from 3.6.1 to 3.6.2.
- [Release notes](https://github.com/matplotlib/matplotlib/releases)
- [Commits](https://github.com/matplotlib/matplotlib/compare/v3.6.1...v3.6.2)

---
updated-dependencies:
- dependency-name: matplotlib
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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requirements.txt

@@ -5,7 +5,7 @@ imbalanced-learn==0.9.1
 libmozdata==0.1.83
 lmdb==1.3.0
 markdown2==2.4.6
-matplotlib==3.6.1
+matplotlib==3.6.2
 mercurial==6.2.3
 microannotate==0.0.24
 mozci==2.2.2