Add point as allowed character in user token

Author: VladislavFitz

Sources/AlgoliaSearchClient/Models/Common/UserToken.swift

@@ -11,13 +11,13 @@ public struct UserToken: StringWrapper, URLEncodable {
 
   public let rawValue: String
 
-  private let allowedCharacters: CharacterSet = CharacterSet.alphanumerics.union(.init(charactersIn: "_-"))
+  private let allowedCharacters: CharacterSet = CharacterSet.alphanumerics.union(.init(charactersIn: "._-"))
 
   public init(rawValue: String) {
     assert(!rawValue.isEmpty, "UserToken can't be empty")
     assert(rawValue.count <= 64, "UserToken length can't be superior to 64 characters. Input: \(rawValue)")
     let containsOnlyAllowedCharacters = rawValue.trimmingCharacters(in: allowedCharacters).isEmpty
-    assert(containsOnlyAllowedCharacters, "UserToken allows only characters of type [a-zA-Z0-9_-]. Input: \(rawValue)")
+    assert(containsOnlyAllowedCharacters, "UserToken allows only characters of type [a-zA-Z0-9_-.]. Input: \(rawValue)")
     self.rawValue = rawValue
   }