Update TEST_MAPPING am: 7ca29e57c7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/linked-hash-map/+/2107430

Change-Id: Ie5fe4afff53f33de932719f5568a8eb82da57ece
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 2c5b7a8..0faca06 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -5,6 +5,11 @@
       "path": "external/rust/crates/lru-cache"
     }
   ],
+  "postsubmit": [
+    {
+      "name": "linked-hash-map_test_tests_test"
+    }
+  ],
   "presubmit": [
     {
       "name": "linked-hash-map_test_tests_test"