Update python Docker tag to v3.9.21

.drone.yml

@@ -15,7 +15,7 @@ trigger:
 
 steps:
   - name: install-lint-test
-    image: python:3.9.21-alpine@sha256:a08328c0af0464a2cf1227ab4a4a4686b90044ba36121f17ef6404e829a0d1c2
+    image: python:3.9.21-alpine@sha256:0019c25ed698575140f4e922166c22837560a8487f83922ca2056471a4aea47b
     env:
       PYROOT: '/pyroot'
       PYTHONUSERBASE: '/pyroot'
@@ -104,7 +104,7 @@ trigger:
 
 steps:
   - name: install-lint-test
-    image: python:3.9.21-alpine@sha256:a08328c0af0464a2cf1227ab4a4a4686b90044ba36121f17ef6404e829a0d1c2
+    image: python:3.9.21-alpine@sha256:0019c25ed698575140f4e922166c22837560a8487f83922ca2056471a4aea47b
     env:
       PYROOT: '/pyroot'
       PYTHONUSERBASE: '/pyroot'

Dockerfile

@@ -2,7 +2,7 @@
 #
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
-FROM python:3.9.21-alpine@sha256:a08328c0af0464a2cf1227ab4a4a4686b90044ba36121f17ef6404e829a0d1c2 AS builder
+FROM python:3.9.21-alpine@sha256:0019c25ed698575140f4e922166c22837560a8487f83922ca2056471a4aea47b AS builder
 
 ENV PYROOT=/pyroot
 ENV PYTHONUSERBASE=$PYROOT
@@ -20,7 +20,7 @@ RUN PIP_USER=1 PIP_IGNORE_INSTALLED=1 pipenv install --system --deploy --ignore-
 RUN pip3 uninstall --yes pipenv
 
 
-FROM python:3.9.21-alpine@sha256:a08328c0af0464a2cf1227ab4a4a4686b90044ba36121f17ef6404e829a0d1c2 AS ki-backend
+FROM python:3.9.21-alpine@sha256:0019c25ed698575140f4e922166c22837560a8487f83922ca2056471a4aea47b AS ki-backend
 
 ENV PYROOT=/pyroot
 ENV PYTHONUSERBASE=$PYROOT