test: use @swc instead of ts-jest

Author: Codex-

jest.config.ts

@@ -1,17 +1,13 @@
 import type { Config } from "@jest/types";
+
 const config: Config.InitialOptions = {
   collectCoverageFrom: [
     "<rootDir>/lib/**/*",
     "!<rootDir>/lib/__fixtures__/**/*",
   ],
-  globals: {
-    "ts-jest": {
-      tsconfig: "tsconfig.json",
-    },
-  },
   moduleFileExtensions: ["ts", "js"],
   transform: {
-    "^.+\\.ts$": "ts-jest",
+    "^.+\\.ts$": "@swc/jest",
   },
   testEnvironment: "node",
   testRegex: "\\.spec\\.[jt]s$",