chore: change exp and nbf to integer in payload validation schema

Author: kimzuni

src/index.ts

@@ -109,8 +109,8 @@ JWTOption<Name, Schema>) => {
 							t.Union([t.String(), t.Array(t.String())])
 						),
 						jti: t.Optional(t.String()),
-						nbf: t.Optional(t.Union([t.String(), t.Number()])),
-						exp: t.Optional(t.Union([t.String(), t.Number()])),
+						nbf: t.Optional(t.Integer()),
+						exp: t.Optional(t.Integer()),
 						iat: t.Optional(t.Integer())
 					})
 				]),