preCloneScript is now preGetSourcesScript

The --pre-clone-script service configuration has been deprecated (https://docs.gitlab.com/ee/update/deprecations.html#deprecation-and-planned-removal-for-ci_pre_clone_script-variable-on-gitlab-saas) and replaced by --pre-get-sources-script (https://about.gitlab.com/blog/2023/03/27/changes-to-the-preclonescript/).

nixos/modules/services/continuous-integration/gitlab-runner.nix

@@ -137,8 +137,8 @@ let
             "--builds-dir ${service.buildsDir}"
             ++ optional (service.cloneUrl != null)
             "--clone-url ${service.cloneUrl}"
-            ++ optional (service.preCloneScript != null)
-            "--pre-clone-script ${service.preCloneScript}"
+            ++ optional (service.preGetSourcesScript != null)
+            "--pre-get-sources-script ${service.preGetSourcesScript}"
             ++ optional (service.preBuildScript != null)
             "--pre-build-script ${service.preBuildScript}"
             ++ optional (service.postBuildScript != null)
@@ -495,7 +495,7 @@ in {
               Whitelist allowed services.
             '';
           };
-          preCloneScript = mkOption {
+          preGetSourcesScript = mkOption {
             type = types.nullOr types.path;
             default = null;
             description = ''