revert: op_mob update

Author: jlp-craigmorten

package.json

@@ -35,7 +35,7 @@
     "ios_saf 12.2-12.5",
     "kaios 2.5",
     "op_mini all",
-    "op_mob 73",
+    "op_mob 64",
     "opera 88",
     "safari 15.5",
     "samsung 17.0",