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:e6bdad4fed6deb8514fbeb735eb34ebb5c2d3ac72342f27b18df353ac0058d66
+    image: python:3.9.21-alpine@sha256:4801637d82a729356ecbc53c181026562cfc0ad25f6a7d4a5a223ab30074716e
     env:
       PYROOT: '/pyroot'
       PYTHONUSERBASE: '/pyroot'
@@ -104,7 +104,7 @@ trigger:
 
 steps:
   - name: install-lint-test
-    image: python:3.9.21-alpine@sha256:e6bdad4fed6deb8514fbeb735eb34ebb5c2d3ac72342f27b18df353ac0058d66
+    image: python:3.9.21-alpine@sha256:4801637d82a729356ecbc53c181026562cfc0ad25f6a7d4a5a223ab30074716e
     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:e6bdad4fed6deb8514fbeb735eb34ebb5c2d3ac72342f27b18df353ac0058d66 AS builder
+FROM python:3.9.21-alpine@sha256:4801637d82a729356ecbc53c181026562cfc0ad25f6a7d4a5a223ab30074716e 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:e6bdad4fed6deb8514fbeb735eb34ebb5c2d3ac72342f27b18df353ac0058d66 AS ki-backend
+FROM python:3.9.21-alpine@sha256:4801637d82a729356ecbc53c181026562cfc0ad25f6a7d4a5a223ab30074716e AS ki-backend
 
 ENV PYROOT=/pyroot
 ENV PYTHONUSERBASE=$PYROOT