Bump base image, deps

Related-To: PRODX-46015
Change-Id: Idd8e855713b05f1c686fe8f718d47e8e77c2186c
diff --git a/Dockerfile b/Dockerfile
index 3a3acc5..73842f8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.11.6-alpine3.18
+FROM python:3.12-alpine3.20
 
 WORKDIR /app
 ENV CRYPTOGRAPHY_DONT_BUILD_RUST=1