Pin system tests for release branch (#11065)

* chore: Pin system-tests for release branch

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

* fix(ci): Add sampling fix to 1.61.x branch

---------

Co-authored-by: dd-octo-sts[bot] <200755185+dd-octo-sts[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Bruce Bujon <bruce.bujon@datadoghq.com>

Author: 3 people

.github/workflows/run-system-tests.yaml

@@ -62,15 +62,15 @@ jobs:
     needs:
     - build
     # If you change the following comment, update the pattern in the update_system_test_reference.sh script to match.
-    uses: DataDog/system-tests/.github/workflows/system-tests.yml@main # system tests are pinned on release branches only
+    uses: DataDog/system-tests/.github/workflows/system-tests.yml@b935670e7942779f509e0d2e589a3d96f6249ea3 # system tests are pinned on release branches only
     permissions:
       contents: read
       id-token: write
       packages: write
     with:
       library: java
        # If you change the following comment, update the pattern in the update_system_test_reference.sh script to match.
-      ref: "main" # system tests are pinned on release branches only
+      ref: "b935670e7942779f509e0d2e589a3d96f6249ea3" # system tests are pinned on release branches only
       binaries_artifact: binaries
       desired_execution_time: 900  # 15 minutes
       scenarios_groups: tracer-release

.gitlab-ci.yml

@@ -1045,7 +1045,7 @@ publishing-gate:
 
 configure_system_tests:
   variables:
-    SYSTEM_TESTS_REF: "main" # system tests are pinned on release branches only
+    SYSTEM_TESTS_REF: "b935670e7942779f509e0d2e589a3d96f6249ea3" # system tests are pinned on release branches only
     SYSTEM_TESTS_SCENARIOS_GROUPS: "simple_onboarding,simple_onboarding_profiling,simple_onboarding_appsec,docker-ssi,lib-injection"
 
 create_key: