Remove login information from update request

Removed the username and password in the GET /update request.
The endpoint does not require authentication and it is unsafe to transmit login credentials over GET requests.

shared/src/commonMain/kotlin/bou/amine/apps/readerforselfossv2/rest/SelfossApi.kt

@@ -375,15 +375,6 @@ class SelfossApi(
                     appSettingsService.getBasicPassword().isNotEmpty()
                 ) {
                     headers {
-                        append(
-                            HttpHeaders.Authorization,
-                            constructBasicAuthValue(
-                                BasicAuthCredentials(
-                                    username = appSettingsService.getBasicUserName(),
-                                    password = appSettingsService.getBasicPassword(),
-                                ),
-                            ),
-                        )
                         append(
                             HttpHeaders.Accept,
                             "text/event-stream",