feat(firefox-beta): roll to r1368 (#19191)

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packages/playwright-core/browsers.json

@@ -27,7 +27,7 @@
     },
     {
       "name": "firefox-beta",
-      "revision": "1367",
+      "revision": "1368",
       "installByDefault": false,
       "browserVersion": "107.0b2"
     },