Increase SII reuse period

* Update table in Section 3.2.1 for "Subject Identity Information validation data reuse periods" to increase the Maximum data reuse period after March 15, 2026 from 366 days to 398 days.

docs/BR.md

@@ -1199,7 +1199,7 @@ Table: Subject Identity Information validation data reuse periods
 | __Certificate issued on or after__ | __Certificate issued before__  | __Maximum data reuse period__  |
 | --                                 | --                             | --                             |
 |                                    | March 15, 2026                 | 825 days                       |
-| March 15, 2026                     |                                | 366 days                       |
+| March 15, 2026                     |                                | 398 days                       |
 
 For validation of Domain Names and IP Addresses according to [Section 3.2.2.4](#3224-validation-of-domain-authorization-or-control) and [Section 3.2.2.5](#3225-authentication-for-an-ip-address), any data, document, or completed validation used MUST be obtained within the maximum number of days prior to issuing the Certificate, as defined in the following table: