add pyqt=5 to installation step

[prjemian]

This step

bs_model_instrument/README.md

Line 16 in dda801d

conda create -y -n $ENV_NAME python=3.11 pyepics

also needs to install pyqt=5 to get its Qt library dependencies installed.

[prjemian]

• solved mpl plot for Mac and linux environments prjemian/model_instrument#5

[prjemian]

@MDecarabas - You reversed this in 7a7d5f0. Why?

[MDecarabas]

When installing the package when specifying the binaries from Conda the package does not build properly and errors out. Creating a clean Conda environment with only the Pyepics binaries fixed that.

[prjemian]

Worked for me the way it is now.