CI: update mirror ref

Author: aramprice

ci/pipelines/stemcells-windows.yml

@@ -587,8 +587,8 @@ jobs:
     tags: [*internal_worker_tag]
     params:
       SOURCE_PATH: stembuild
-      GOPROXY: https://((broadcom_artifactory_mirrors.username)):((broadcom_artifactory_mirrors.password))@((broadcom_artifactory_mirrors.goproxy)),off
-      GOSUMDB: https://(broadcom_artifactory_mirrors.gosumdb))
+      GOPROXY: https://((repository_mirrors.username)):((repository_mirrors.password))@((repository_mirrors.goproxy)),off
+      GOSUMDB: https://((broadcom_artifactory_mirrors))
     input_mapping:
       input_repo: stemcell-builder
     output_mapping:
@@ -598,8 +598,8 @@ jobs:
     tags: [*internal_worker_tag]
     params:
       SOURCE_PATH: acceptance_test
-      GOPROXY: https://((broadcom_artifactory_mirrors.username)):((broadcom_artifactory_mirrors.password))@((broadcom_artifactory_mirrors.goproxy)),off
-      GOSUMDB: https://(broadcom_artifactory_mirrors.gosumdb))
+      GOPROXY: https://((repository_mirrors.username)):((repository_mirrors.password))@((repository_mirrors.goproxy)),off
+      GOSUMDB: https://((broadcom_artifactory_mirrors))
     input_mapping:
       input_repo: stemcell-builder
     output_mapping: