build(deps-dev): bump linkinator from 1.6.3 to 1.6.4 (#2760)

Bumps [linkinator](https://github.com/JustinBeckwith/linkinator) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/JustinBeckwith/linkinator/releases)
- [Commits](JustinBeckwith/linkinator@v1.6.3...v1.6.4)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -71,7 +71,7 @@
     "cross-env": "^6.0.3",
     "delay-cli": "^1.1.0",
     "faucet": "0.0.1",
-    "linkinator": "^1.6.3",
+    "linkinator": "^1.6.4",
     "lockfile-lint": "^2.2.0",
     "nock": "^11.7.0",
     "proxyquire": "^2.1.3",