ci: Follow workspace restructure to checkout the right meta-zephyr revision

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

.gitlab-ci.yml

@@ -30,7 +30,7 @@ reuse:
 # incoming changes that match the repository holding this CI pipeline.
 .workspace:
   variables:
-    OHOS_CI_GIT_REPO_PATH: sources/meta-zephyr
+    CI_ONIRO_GIT_REPO_PATH: meta-zephyr
 
 # Disable Linux and FreeRTOS builds that are unlikely to be affected by Zephyr
 # changes and certainly save some time. Some jobs no longer use the