fix: generazione fattura con caratteri speciali

plugins/exportFE/src/Validator.php

@@ -1014,11 +1014,11 @@ class Validator
             '℀' => 'a/c',
             '℁' => 'a/s',
             'ℂ' => 'C',
-            '℃' => '°C',
+            '℃' => 'C',
             '℅' => 'c/o',
             '℆' => 'c/u',
             'ℇ' => 'Ɛ',
-            '℉' => '°F',
+            '℉' => 'F',
             'ℊ' => 'g',
             'ℋ' => 'H',
             'ℌ' => 'H',
@@ -4445,6 +4445,7 @@ class Validator
             '‐' => '-',
             '✓' => '-',
             '●' => '-',
+            '°' => '.',
         ]);
 
         return $string;