Bug 1713392 - Disable browser_accessibility_context_menu_inspector.js on OS X 10.15 r=malexandru

Differential Revision: https://phabricator.services.mozilla.com/D116290

devtools/client/accessibility/test/browser/browser.ini

@@ -13,7 +13,9 @@ support-files =
 [browser_accessibility_context_menu_browser.js]
 skip-if = (os == 'win' && processor == 'aarch64') # bug 1533184
 [browser_accessibility_context_menu_inspector.js]
-skip-if = (os == 'win' && processor == 'aarch64') # bug 1533484
+skip-if =
+  (os == 'win' && processor == 'aarch64') # bug 1533484
+  apple_catalina # Bug 1713392
 [browser_accessibility_fission_switch_target.js]
 skip-if = (os == 'linux' && asan) # bug 1666940
 [browser_accessibility_mutations.js]