Bump pyyaml from 5.3.1 to 5.4 in /hyperlpr_py3

Bumps [pyyaml](https://github.com/yaml/pyyaml) from 5.3.1 to 5.4.
- [Release notes](https://github.com/yaml/pyyaml/releases)
- [Changelog](https://github.com/yaml/pyyaml/blob/master/CHANGES)
- [Commits](https://github.com/yaml/pyyaml/compare/5.3.1...5.4)

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

hyperlpr_py3/requirements.txt

@@ -37,7 +37,7 @@ pyparsing==2.4.6
 python-dateutil==2.8.1
 python-editor==1.0.4
 PyWavelets==1.1.1
-PyYAML==5.3.1
+PyYAML==5.4
 redis==3.4.1
 scikit-image==0.16.2
 scikit-learn==0.22.2.post1