Bump certifi from 2023.7.22 to 2024.7.4 in /examples/research_projects/decision_transformer (#31813)

Bump certifi in /examples/research_projects/decision_transformer

Bumps [certifi](https://github.com/certifi/python-certifi) from 2023.7.22 to 2024.7.4.
- [Commits](https://github.com/certifi/python-certifi/compare/2023.07.22...2024.07.04)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: direct:production
...

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examples/research_projects/decision_transformer/requirements.txt

@@ -20,7 +20,7 @@ boto3==1.16.34
 botocore==1.19.63
 Brotli==1.0.9
 cachetools==5.0.0
-certifi==2023.7.22
+certifi==2024.7.4
 cffi==1.15.0
 chardet==4.0.0
 charset-normalizer==2.0.12