Bump python from 3.8-slim-bookworm to 3.13-slim-bookworm in /build

Bumps python from 3.8-slim-bookworm to 3.13-slim-bookworm.

---
updated-dependencies:
- dependency-name: python
  dependency-version: 3.13-slim-bookworm
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

build/Dockerfile.debian11

@@ -3,7 +3,7 @@
 # Copyright 2021-2025 by all people listed in https://github.com/hyperledger/indy-node-container/blob/main/NOTICE , see
 # https://github.com/hyperledger/indy-node-container/blob/main/LICENSE for the license information.
 
-FROM python:3.8-slim-bullseye
+FROM python:3.13-slim-bullseye
 
 LABEL org.opencontainers.image.description="Debian 11 based image to run indy-node. See https://github.com/hyperledger/indy-node-container"
 

build/Dockerfile.debian12

@@ -3,7 +3,7 @@
 # Copyright 2021-2025 by all people listed in https://github.com/hyperledger/indy-node-container/blob/main/NOTICE , see
 # https://github.com/hyperledger/indy-node-container/blob/main/LICENSE for the license information.
 
-FROM python:3.8-slim-bookworm
+FROM python:3.13-slim-bookworm
 
 LABEL org.opencontainers.image.description="Debian 12 based image to run indy-node. See https://github.com/hyperledger/indy-node-container"