chore(deps): Bump @types/split2 from 4.2.0 to 4.2.1 (#136)

Bumps [@types/split2](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/split2) from 4.2.0 to 4.2.1.
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package.json

@@ -53,7 +53,7 @@
     "@shelf/jest-mongodb": "^4.1.7",
     "@types/jest": "^29.5.3",
     "@types/node": "^20.3.3",
-    "@types/split2": "^4.2.0",
+    "@types/split2": "^4.2.1",
     "del-cli": "^5.1.0",
     "jest": "^29.6.1",
     "jest-extended": "^4.0.0",