client: Dockerfiles: dev-tools: refactor to use yq

Replaces `shyaml` dependency with `yq`.

client/Dockerfiles/dev-tools/Dockerfile.dev-tools.in

@@ -86,15 +86,7 @@ RUN apt-get install -y doxygen graphviz
 # Client-side `version` command
 #
 
-RUN apt-get install -y pipx
-
-USER @DOCKER_FINANCE_USER@
-WORKDIR /home/@DOCKER_FINANCE_USER@
-
-RUN pipx install shyaml
-RUN echo "export PATH=\"\$PATH:\${HOME}/.local/bin\"" | tee -a ~/.bash_aliases
-
-USER root
+RUN apt-get install -y yq
 
 #
 # Entrypoint