chore(deps): update dependency @testing-library/jest-dom to v6.8.0

Author: renovate[bot]

backstage/yarn.lock

@@ -12317,17 +12317,16 @@ __metadata:
   linkType: hard
 
 "@testing-library/jest-dom@npm:^6.6.3":
-  version: 6.6.4
-  resolution: "@testing-library/jest-dom@npm:6.6.4"
+  version: 6.8.0
+  resolution: "@testing-library/jest-dom@npm:6.8.0"
   dependencies:
     "@adobe/css-tools": "npm:^4.4.0"
     aria-query: "npm:^5.0.0"
     css.escape: "npm:^1.5.1"
     dom-accessibility-api: "npm:^0.6.3"
-    lodash: "npm:^4.17.21"
     picocolors: "npm:^1.1.1"
     redent: "npm:^3.0.0"
-  checksum: 10c0/cb73adf4910f654f6cc61cfb9a551efdffa04ef423bc7fbfd67a6d8aa31c6c6dc6363fe9db23a35fc7cb32ff1390e6e1c77575c2fa70d8b028a943af32bc214c
+  checksum: 10c0/4c5b8b433e0339e0399b940ae901a99ae00f1d5ffb7cbb295460b2c44aaad0bc7befcca7b06ceed7aa68a524970077468046c9fe52836ee26f45b807c80a7ff1
   languageName: node
   linkType: hard