Common name needs to be lower case

changelogs/unreleased/55820-adds-common-name-chart-value.yml

+---
+title: Ensure Cert Manager works with Auto DevOps URLs greater than 64 bytes
+merge_request: 24683
+author:
+type: fixed

lib/gitlab/ci/templates/Auto-DevOps.gitlab-ci.yml

@@ -689,7 +689,7 @@ rollout 100%:
         --set application.database_url="$DATABASE_URL" \
         --set application.secretName="$APPLICATION_SECRET_NAME" \
         --set application.secretChecksum="$APPLICATION_SECRET_CHECKSUM" \
-        --set service.commonName="LE.$AUTO_DEVOPS_DOMAIN" \
+        --set service.commonName="le.$AUTO_DEVOPS_DOMAIN" \
         --set service.url="$CI_ENVIRONMENT_URL" \
         --set service.additionalHosts="$additional_hosts" \
         --set replicaCount="$replicas" \
@@ -725,7 +725,7 @@ rollout 100%:
         --set application.database_url="$DATABASE_URL" \
         --set application.secretName="$APPLICATION_SECRET_NAME" \
         --set application.secretChecksum="$APPLICATION_SECRET_CHECKSUM" \
-        --set service.commonName="LE.$AUTO_DEVOPS_DOMAIN" \
+        --set service.commonName="le.$AUTO_DEVOPS_DOMAIN" \
         --set service.url="$CI_ENVIRONMENT_URL" \
         --set service.additionalHosts="$additional_hosts" \
         --set replicaCount="$replicas" \