refactor: use JSON::MaybeXS instead of JSON::PP

[stephanegigandet]

In the past we had issues with the JSON::XS module, so we we switched to JSON::PP for safety.
Maybe things work better with Cpanel::JSON::XS, so trying to replace all instances with https://metacpan.org/pod/JSON::MaybeXS (which loads Cpan::JSON::XS or JSON::XS if present)

[alexgarel]

🤞

[stephanegigandet]

One difference is that integers are changed from 0 and 4 to 0.0 and 4.0 in API results:

-   "ingredients_with_unspecified_percent_sum" : 100,
+   "ingredients_with_unspecified_percent_sum" : 100.0,

-            "fruits_vegetables_legumes" : 0,
+            "fruits_vegetables_legumes" : 0.0,

[sonarcloud]

Quality Gate passed

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