[cubing/puzzles] Mark the Kilominx x2 test as slow.

Author: lgarron

src/cubing/puzzles/implementations/kilominx/kilominx.test.ts

@@ -1,8 +1,8 @@
 import { expect, test } from "bun:test";
-
+import { SKIP_SLOW_TESTS } from "../../../../test/SKIP_SLOW_TESTS";
 import { kilominx } from "./";
 
-test("Kilominx can apply x2", async () => {
+test.skipIf(SKIP_SLOW_TESTS)("Kilominx can apply x2", async () => {
   const kpuzzle = await kilominx.kpuzzle();
   expect(
     kpuzzle.algToTransformation("x2").isIdentityTransformation(),