Update translations: default (#12168)

This PR modifies translations in the project. It will append multiple
commits and may add, modify, or delete translations. Feel free to merge
any time.

## Before you deploy
- Check translations for malicious HTML.

## Merge conflicts?
<details>

If this PR has been open long enough that it has drifted out of sync
from the base branch and it has developed merge conflicts as a result,
follow these steps, in order:

1. Close this PR.
2. Run the following Spy command in Slack, inserting the PR number in
the second argument:

> `@spy translation-platform force-pull Shopify/polaris
pull_request_number=<this PR>`.

Translation Platform will recreate the translation commits based on the
latest commit on the base branch and open a new PR.

</details>

## Questions?
Visit [#help-localization](https://shopify.slack.com/messages/C7TJQLVC7)
for questions about this pull request.

Translation component owners: @Shopify/polaris-eng

---------

Co-authored-by: translation-platform[bot] <34770790+translation-platform[bot]@users.noreply.github.com>

polaris-react/locales/es.json

@@ -19,7 +19,7 @@
         "success": "Logrado",
         "warning": "Advertencia",
         "attention": "Atención",
-        "new": "Nueva",
+        "new": "Nuevo",
         "critical": "Crítico",
         "readOnly": "Solo lectura",
         "enabled": "Activado"

polaris-react/locales/it.json

@@ -19,7 +19,7 @@
         "success": "Operazione riuscita",
         "warning": "Avvertimento",
         "attention": "Attenzione",
-        "new": "Nuova",
+        "new": "Novità",
         "critical": "Critico",
         "readOnly": "Sola lettura",
         "enabled": "Abilitato"
@@ -338,7 +338,7 @@
     "IndexTable": {
       "emptySearchTitle": "Impossibile trovare {resourceNamePlural}",
       "emptySearchDescription": "Prova a cambiare i filtri o il termine di ricerca",
-      "onboardingBadgeText": "Nuova",
+      "onboardingBadgeText": "Novità",
       "resourceLoadingAccessibilityLabel": "Caricamento {resourceNamePlural} in corso",
       "selectAllLabel": "Seleziona tutto: {resourceNamePlural}",
       "selected": "{selectedItemsCount} selezionati",