[media] Disable decryptor_adapter_tests

The decryptor_adapter_tests have been flaking on asan runs. This CL
disables the test during the investigation.

BUG: 34881
BUG: 34924
Change-Id: Id9f46f62420423b1d993acf13f718240eaaae331
diff --git a/garnet/lib/media/codec_impl/unit_tests/BUILD.gn b/garnet/lib/media/codec_impl/unit_tests/BUILD.gn
index 7f8de1e..f5a5b67 100644
--- a/garnet/lib/media/codec_impl/unit_tests/BUILD.gn
+++ b/garnet/lib/media/codec_impl/unit_tests/BUILD.gn
@@ -87,6 +87,9 @@
     {
       name = "decryptor_adapter_tests"
       environments = basic_envs
+
+      # TODO(34924): This test is currently flaky. Re-enable once issue is resolved.
+      disabled = true
     },
   ]
 }