[FEAT] Declare the minimum R version required by `bpmnVisualizationR`

[tbouffard]

Is your feature request related to a problem? Please describe.
Currently, users of the package don't know what R version they can use at minimum.

Describe the solution you'd like
See https://blog.r-hub.io/2022/09/12/r-dependency/.

Describe alternatives you've considered
N/A

Additional context
N/A