add some spanish + portuguese accents to localization (#83)

Co-authored-by: Fern Support <[email protected]>

fern/definition/voices.yml

@@ -108,15 +108,33 @@ types:
       - uk
       - us
 
+  LocalizeSpanishDialect:
+    enum:
+      - mx
+      - pe
+
+  LocalizePortugueseDialect:
+    enum:
+      - br
+      - eu
+
   LocalizeDialect:
     discriminated: false
     union:
       - type: LocalizeEnglishDialect
         display-name: English dialect
         docs: |
-          Only available when language is set to English (`en`).
+          Only available when language is set to English (`en`). Options: Australian (`au`), Indian (`in`), Southern (`so`), British (`uk`), or American (`us`).
+      - type: LocalizeSpanishDialect
+        display-name: Spanish dialect
+        docs: |
+          Only available when language is set to Spanish (`es`). Options: Mexican (`mx`) and Peninsular (`pe`).
+      - type: LocalizePortugueseDialect
+        display-name: Portuguese dialect
+        docs: |
+          Only available when language is set to Portuguese (`pt`). Options: Brazilian (`br`) and European Portuguese (`eu`).
     docs: |
-      The dialect to localize to. Only supported for English (`en`).
+      The dialect to localize to. Only supported for English (`en`), Spanish (`es`), and Portuguese (`pt`).
 
   Gender:
     enum: