Bug 1611171 - Update expectation on linux18.04 for shared-worker-import-blob-url.any.html. r=jgraham

Differential Revision: https://phabricator.services.mozilla.com/D61389

--HG--
extra : moz-landing-system : lando

testing/web-platform/meta/workers/modules/shared-worker-import-blob-url.any.js.ini

@@ -9,6 +9,7 @@
     if (os == "linux") and debug: ERROR
     if (os == "android") and debug: ["ERROR", "OK"]
     if (os == "android") and not debug: ["ERROR", "OK"]
+    if (os == "linux") and (processor == "x86_64") and (version == "Ubuntu 18.04") and debug: ["ERROR", "OK"]
     [OK, ERROR]
   [Dynamic import.]
     expected: FAIL