Bump mako in /examples/research_projects/decision_transformer (#19077)

Bumps [mako](https://github.com/sqlalchemy/mako) from 1.2.0 to 1.2.2.
- [Release notes](https://github.com/sqlalchemy/mako/releases)
- [Changelog](https://github.com/sqlalchemy/mako/blob/main/CHANGES)
- [Commits](https://github.com/sqlalchemy/mako/commits

)

---
updated-dependencies:
- dependency-name: mako
  dependency-type: direct:production
...
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examples/research_projects/decision_transformer/requirements.txt

@@ -104,7 +104,7 @@ kubernetes==12.0.1
 libclang==13.0.0
 librosa==0.9.1
 llvmlite==0.38.0
-Mako==1.2.0
+Mako==1.2.2
 Markdown==3.3.6
 MarkupSafe==1.1.1
 matplotlib==3.5.1