use bookworm for python 3.9

Author: Luke-Roy-IBM

core/CHANGELOG.md

@@ -19,6 +19,10 @@
 
 # Python 3 OpenWhisk Runtime Container
 
+## Next
+ - add Python 3.13
+ - update Python 3.9 base image to bookworm
+
 ## 1.20.0
  - Dependabot Fixes (#159)
  - Update virtualenv for python:3.9 to fix tests. (#161)

core/python39Action/Dockerfile

@@ -34,7 +34,7 @@ RUN curl -sL \
   && cd openwhisk-runtime-go-*/main\
   && GO111MODULE=on CGO_ENABLED=0 go build -o /bin/proxy
 
-FROM python:3.9-buster
+FROM python:3.9-bookworm
 
 # select the builder to use
 ARG GO_PROXY_BUILD_FROM=release