Bug 1937351 - disable test_backgroundtask_shouldprocessupdates.js on windows for causing frequent failures. r=intermittent-reviewers,aryx DONTBUILD

Differential Revision: https://phabricator.services.mozilla.com/D275805

Author: chorotan

toolkit/components/backgroundtasks/tests/xpcshell/xpcshell.toml

@@ -60,6 +60,10 @@ skip-if = [
 
 ["test_backgroundtask_shouldprocessupdates.js"]
 run-sequentially = ["true"] # perma-fail in parallel
+skip-if = [
+  "os == 'win' && os_version == '10.2009' && arch == 'x86_64'", # Bug 1937351
+  "os == 'win' && os_version == '11.26100'", # Bug 1937351
+]
 
 ["test_backgroundtask_simultaneous_instances.js"]