Suppress progress on pulling image on Code Quality of Auto DevOps

to focus on the results from Code Quality job.
Signed-off-by: Takuya Noguchi <takninnovationresearch@gmail.com>

changelogs/unreleased/37033-auto-devops-suppress-progress-on-pulling-docker-base-image-to-be-ru.yml

+---
+title: Suppress progress on pulling image on Code Quality of Auto DevOps
+merge_request: 20604
+author: Takuya Noguchi
+type: other

lib/gitlab/ci/templates/Jobs/Code-Quality.gitlab-ci.yml

@@ -7,6 +7,7 @@ code_quality:
   variables:
     DOCKER_DRIVER: overlay2
     DOCKER_TLS_CERTDIR: ""
+    CODE_QUALITY_IMAGE: "registry.gitlab.com/gitlab-org/security-products/codequality:12-5-stable"
   script:
     - |
       if ! docker info &>/dev/null; then
@@ -14,11 +15,12 @@ code_quality:
           export DOCKER_HOST='tcp://localhost:2375'
         fi
       fi
+    - docker pull --quiet "$CODE_QUALITY_IMAGE"
     - docker run
         --env SOURCE_CODE="$PWD"
         --volume "$PWD":/code
         --volume /var/run/docker.sock:/var/run/docker.sock
-        "registry.gitlab.com/gitlab-org/security-products/codequality:12-5-stable" /code
+        "$CODE_QUALITY_IMAGE" /code
   artifacts:
     reports:
       codequality: gl-code-quality-report.json