Bump pyyaml from 5.1.2 to 5.4 in /tutorials/compiler/germancredit

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.1.2 to 5.4.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](yaml/pyyaml@5.1.2...5.4)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tutorials/compiler/germancredit/requirements.txt

@@ -10,7 +10,7 @@ lime==0.1.1.32
 dill==0.3.0
 shap==0.29.3
 yattag==1.12.2
-pyyaml==5.1.2
+pyyaml==5.4
 jsonschema==3.0.2
 plotly==4.3.0
 nltk==3.4.5