This fix resolves two problems.

1. The v69.3.0 release of the Python3 package setuptools enforces the
   PEP~625 proposal [0], which replaces hyphens with underbars in a
   package name. Therefore I made the following changes:

Kieker-python/functions.sh
- "${PIP}" install dist/kieker-monitoring-for-python-0.0.1.tar.gz
+ "${PIP}" install dist/kieker_monitoring_for_python-0.0.1.tar.gz

2. Temurin JDK 21 image (based on Alpine Linux 3.19, 3.19.2) comes up
   with the v23.3.1 release of the Python3 package pip. Its v23.0
   enforces the PEP~668 proposal [1], which raises an error when
   installing a local package against the OS-installed Python
   environment. Therefore I made the following changes:

Kieker-python/benchmark.sh
+ VENV_DIR="${HOME}/venv/moobench"
+ python3 -m venv ${VENV_DIR}
+ source ${VENV_DIR}/bin/activate
+
  # configure base dir
  BASE_DIR=$(cd "$(dirname "$0")"; pwd)

  ...

  info "Done."

+ deactivate
+ rm -rf ${VENV_DIR}
+
  exit 0
  # end

[0]: https://github.com/pypa/setuptools/blob/v69.3.0/NEWS.rst
[1]: https://github.com/pypa/pip/blob/23.0/NEWS.rst