chore(deps): pin dependencies

Author: renovate[bot]

Dockerfile

@@ -1,7 +1,7 @@
 # The devcontainer should use the developer target and run as root with podman
 # or docker with user namespaces.
 # Version SHA has been removed, see: https://github.com/DiamondLightSource/blueapi/issues/1053
-ARG PYTHON_VERSION=3.11
+ARG PYTHON_VERSION=3.11@sha256:0dab67c838514eef83e6c9d2c0e53e960fc94237635e8996d08caeec98937abc
 FROM python:${PYTHON_VERSION} AS developer
 
 # Add any system dependencies for the developer/build environment here

helm/blueapi/values.yaml

@@ -9,7 +9,7 @@ image:
   # This sets the pull policy for images.
   pullPolicy: IfNotPresent
   # Overrides the image tag whose default is the chart appVersion.
-  tag: ""
+  tag: "@sha256:4af3a4f5809c89dd53d8c6026354e62d87c9fe446e2ba79035b70811861186cb"
 
 # This is for the secrets for pulling an image from a private repository more information can be found here: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
 imagePullSecrets: []