Update dependency @testing-library/jest-dom to ^6.6.4

Author: renovate[bot]

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@stanlemon/webdev",
-  "version": "0.2.49",
+  "version": "0.2.50",
   "description": "My typical web development setup, but without all the copy and paste.",
   "keywords": [
     "webpack",
@@ -30,7 +30,7 @@
     "@babel/preset-typescript": "^7.27.1",
     "@peculiar/webcrypto": "^1.5.0",
     "@stanlemon/eslint-config": "*",
-    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/jest-dom": "^6.6.4",
     "babel-jest": "^30.0.5",
     "babel-loader": "^10.0.0",
     "css-loader": "^7.1.2",