Update CircuitPython to 9.1.0

Author: rgrizzell

Dockerfile

@@ -1,5 +1,5 @@
 FROM debian:12-slim as build
-ARG VERSION=9.0.5
+ARG VERSION=9.1.0
 ARG VARIANT=container
 ARG MICROPYPATH=/ciruitpy/lib
 
@@ -32,4 +32,4 @@ USER circuitpy
 WORKDIR /circuitpy
 # Load libraries from the working directory
 ENV MICROPYPATH=$MICROPYPATH
-ENTRYPOINT ["/usr/local/bin/micropython"]
+ENTRYPOINT ["/usr/local/bin/micropython"]