message: relax the error bound on adv_apply_on_small_mtx
diff: @@ -525,7 +525,7 @@ TEST_F(Ell, AdvancedApplyOnSmallMatrixIsEquivalentToRef)
  mtx->apply(alpha.get(), y.get(), beta.get(), expected.get());
  dmtx->apply(dalpha.get(), dy.get(), dbeta.get(), dresult.get());
  - GKO_ASSERT_MTX_NEAR(dresult, expected, r<vtype>::value);
  + GKO_ASSERT_MTX_NEAR(dresult, expected, r<vtype>::value * 5);
  }
  