uvk5: Bless 3.00.x firmware

As reported in #11495, this firmware version was found in the field to
be working.

Fixes #11495

chirp/drivers/uvk5.py

@@ -2043,8 +2043,9 @@ def set_memory(self, mem):
 class UVK5Radio(UVK5RadioBase):
     @classmethod
     def k5_approve_firmware(cls, firmware):
-        approved_prefixes = ('k5_2.01.', 'app_2.01.', '2.01.',
-                             '1o11', '4.00.', 'k5_4.00.', '5.00.')
+        approved_prefixes = (
+            'k5_2.01.', 'app_2.01.', '2.01.', '3.00.',
+            '1o11', '4.00.', 'k5_4.00.', '5.00.')
         return any(firmware.startswith(x) for x in approved_prefixes)
 
     @classmethod