Workbench: Fix the build.

Use a version of `ruamel.yaml.clib` compatible with Python 3.13.

workbench/Dockerfile

@@ -179,6 +179,7 @@ ENV PIPX_BIN_DIR /opt/pipx/bin
 # hadolint ignore=DL3013
 RUN export PIP_CONSTRAINT=/tmp/constraint.txt && \
     python3 -m pip freeze | grep packaging >> "$PIP_CONSTRAINT" && \
+    echo 'ruamel.yaml.clib>=0.2.12' >> "$PIP_CONSTRAINT" && \
     python3 -m pip install --no-cache-dir --break-system-packages \
         Glances \
         PyGObject \