Wait for debug build before triggering child pipeline

* Wait for debug build before triggering child pipeline

Commit 0c6997a moved linux-x86_64 debug build into the parent
pipeline so it runs on every MR, but the trigger debug build and test
job kept its `needs: []`. Once the child pipeline started, its jobs
referenced `pipeline: $PARENT_PIPELINE_ID, job: linux-x86_64 debug
build` and failed with "could not retrieve the needed artifacts" if
the parent build had not yet finished.

Add the explicit dependency so the trigger waits, mirroring the
working `trigger cuda 13 pipeline` pattern.

Signed-off-by: Eric Shi <ershi@nvidia.com>

Approved-by: Eric Shi <ershi@nvidia.com>

See merge request omniverse/warp!2306

Author: shi-eric

.gitlab-ci.yml

@@ -772,7 +772,7 @@ trigger debug build and test pipeline:
   image: busybox
   extends:
     - .ipp_lnx_x86_64_cpu_micro
-  needs: []
+  needs: [linux-x86_64 debug build]
   rules:
     - if: $CI_PIPELINE_SOURCE == "schedule"
     - if: $CI_COMMIT_TAG