Update presubmit.yml

Author: mmorel-35

modules/prometheus-cpp/1.2.4/presubmit.yml

@@ -14,6 +14,4 @@ tasks:
     platform: ${{ platform }}
     bazel: ${{ bazel }}
     build_targets:
-    - '@prometheus-cpp//core/src/...'
-    test_targets:
-    - '@prometheus-cpp//core/tests/...'
+    - '@prometheus-cpp//core/:core'