use "iat" for "timestamp" in session info hook
@@ -2808,7 +2808,7 @@ static int oidc_handle_remove_at_cache(request_rec *r, oidc_cfg *c) {
#define OIDC_HOOK_INFO_REQUEST "info"
#define OIDC_HOOK_INFO_FORMAT_JSON "json"
-#define OIDC_HOOK_INFO_TIMESTAMP "timestamp"
+#define OIDC_HOOK_INFO_TIMESTAMP "iat"
#define OIDC_HOOK_INFO_ACCES_TOKEN "access_token"
#define OIDC_HOOK_INFO_ACCES_TOKEN_EXP "access_token_expires"
#define OIDC_HOOK_INFO_USER_INFO "userinfo"
