Kubernetes runner: Service does not honor pull policy

Summary

According to https://docs.gitlab.com/ee/ci/yaml/index.html#servicespull_policy setting a pull policy for services is supported, however it does not work.

Steps to reproduce

.gitlab-ci.yml

bug-demo:
  services:
    - name: postgres:11.6
      pull_policy: always
  image: alpine:3.19.1
  script:
    - sleep 5m

Actual behavior

When looking at the pod spawning in our Kubernetes cluster, imagePullPolicy for the service image is set to IfNotPresent:

    image: postgres:11.6                                                                                                                                                                                                                      
    imagePullPolicy: IfNotPresent                                                                                                                                                                                                             
    name: svc-0        

Expected behavior

imagePullPolicy of Always for the service image

Environment description

GitLab: 16.11.0 on Kubernetes
GitLab Runner: gitlab-runner:alpine-v16.11.0 on Kubernetes
K8s Rev: v1.27.11-eks-b9c9ed7

config.toml contents

gitlab-runner-gp-858c7759f9-8qhlq:/$ cat /configmaps/config.template.toml
# this is a gitlab-runner TEMPLATE_CONFIG file.
# the restrictions here are:
# - only a single runners section
# - no global options
# global options are configured via the helm chart values.
# this file is for handling specific options for the runner executors
[[runners]]
  [runners.kubernetes]
    image = "buildpack-deps:bullseye-scm"
    privileged = false
    service_account = "default"
    cpu_limit = ""
    memory_limit = ""
    cpu_request = "3"
    memory_request = "6Gi"
    image_pull_secrets = ["iris-devops-private-registry-auth"]
    poll_timeout = 600
    allowed_pull_policies = ["always", "if-not-present"]
    pull_policy = ["if-not-present"]
    [runners.kubernetes.pod_labels]
    app = "gitlab-job"
    "velero.io/exclude-from-backup" = "true"
    [runners.kubernetes.node_selector]
          "ci-runner" = "gp"
        [runners.kubernetes.node_tolerations]
          "ci-gp=true" = "NoSchedule"
            [runners.kubernetes.pod_annotations]
      "pod-cleanup.gitlab.com/ttl" = "12h"
      "cluster-autoscaler.kubernetes.io/safe-to-evict" = "false"
        [runners.cache]
    Type    = "s3"
    Path    = "/"
    Shared  = true
    [runners.cache.s3]
      BucketName = "iris-devops-gitlab-runner-gp-shared-cache"
      BucketLocation = "eu-central-1"

Used GitLab Runner version

gitlab-runner --version
Version:      16.11.0
Git revision: 91a27b2a
Git branch:   16-11-stable
GO version:   go1.21.9
Built:        2024-04-18T19:21:08+0000
OS/Arch:      linux/arm64