chore: move to swc/jest (#7739)

* chore: move to swc

* chore: fix tax rate tests

* chore: undo failed test

* chore: fix unit tests script

* chore: use node 20

* Update scripts/run-workspace-unit-tests-in-chunks.sh

packages/modules/workflow-engine-inmemory/package.json

@@ -40,7 +40,6 @@
     "jest": "^29.7.0",
     "medusa-test-utils": "^1.1.44",
     "rimraf": "^3.0.2",
-    "ts-jest": "^29.1.1",
     "ts-node": "^10.9.1",
     "tsc-alias": "^1.8.6",
     "typescript": "^5.1.6"