fix(docker): python bytecode compilation

- we were seeing some issues when building the uboot containers with
  bytecode compilation, especially on Ubuntu Noble
- apparently this is common and known problem
- there are multiple possible workarounds, one is to postpone the
  automatic bytecode compilation, but this is problematic because our
  containers are multi-arch (x86_64 and arm64)
- bump ubuntu to Plucky Puffin (25.04)

Signed-off-by: AtomicFS <vojtech.vesely@9elements.com>

Author: AtomicFS

docker/uboot/Dockerfile

@@ -1,7 +1,7 @@
 # This is multi-stage Dockerfile
 #   Docs: https://docs.docker.com/build/building/multi-stage/
 
-ARG SOURCE_IMAGE=ubuntu:noble
+ARG SOURCE_IMAGE=ubuntu:plucky
 ARG TARGETARCH=amd64
 
 #=============
@@ -18,10 +18,6 @@ ENV VERIFICATION_TEST_UBOOT_VERSION=v${UBOOT_VERSION}
 
 ENV DEBIAN_FRONTEND=noninteractive
 
-# Ubuntu Noble has issues with Python bytecode compilation
-# Disable automatic .pyc compilation during install, and later run it manually
-ENV DEB_PYTHON_INSTALL_LAYOUT=deb
-
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
         bc \
@@ -66,7 +62,6 @@ RUN apt-get update && \
         python3-virtualenv \
         swig \
         uuid-dev \
-    && python3 -m compileall /usr/lib/python3/dist-packages \
     && \
     if [ "${TARGETARCH}" = 'amd64' ]; then \
         apt-get install -y --no-install-recommends \