Bump fonttools from 4.31.1 to 4.43.0 in /examples/research_projects/decision_transformer (#28417)

Bump fonttools in /examples/research_projects/decision_transformer

Bumps [fonttools](https://github.com/fonttools/fonttools) from 4.31.1 to 4.43.0.
- [Release notes](https://github.com/fonttools/fonttools/releases)
- [Changelog](https://github.com/fonttools/fonttools/blob/main/NEWS.rst)
- [Commits](https://github.com/fonttools/fonttools/compare/4.31.1...4.43.0

)

---
updated-dependencies:
- dependency-name: fonttools
  dependency-type: direct:production
...
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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

examples/research_projects/decision_transformer/requirements.txt

@@ -61,7 +61,7 @@ Flask==2.3.2
 Flask-Compress==1.11
 flatbuffers==2.0
 flax==0.4.0
-fonttools==4.31.1
+fonttools==4.43.0
 frozenlist==1.3.0
 fsspec==2022.2.0
 fugashi==1.1.2