[mielecloud] Deprecations (openhab#20866)

Signed-off-by: Holger Friedrich <mail@holger-friedrich.de>

Author: holgerfriedrich

bundles/org.openhab.binding.mielecloud/src/main/java/org/openhab/binding/mielecloud/internal/config/servlet/SuccessServlet.java

@@ -194,7 +194,7 @@ public int compareTo(Language other) {
          *         representation for the given language code.
          */
         public static Optional<Language> fromCode(String code) {
-            Locale locale = new Locale(code);
+            Locale locale = Locale.of(code);
             String name = locale.getDisplayLanguage(locale);
             if (name.isEmpty()) {
                 return Optional.empty();

bundles/org.openhab.binding.mielecloud/src/main/java/org/openhab/binding/mielecloud/internal/util/LocaleValidator.java

@@ -36,7 +36,7 @@ private LocaleValidator() {
      */
     public static boolean isValidLanguage(String language) {
         try {
-            String iso3Language = new Locale(language).getISO3Language();
+            String iso3Language = Locale.of(language).getISO3Language();
             return iso3Language != null && !iso3Language.isEmpty();
         } catch (MissingResourceException e) {
             return false;