deps(dev): bump @sindresorhus/is from 5.6.0 to 6.0.0

Bumps [@sindresorhus/is](https://github.com/sindresorhus/is) from 5.6.0 to 6.0.0.
- [Release notes](https://github.com/sindresorhus/is/releases)
- [Commits](sindresorhus/is@v5.6.0...v6.0.0)

---
updated-dependencies:
- dependency-name: "@sindresorhus/is"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -164,7 +164,7 @@
     "multiformats": "^11.0.0"
   },
   "devDependencies": {
-    "@sindresorhus/is": "^5.3.0",
+    "@sindresorhus/is": "^6.0.0",
     "aegir": "^40.0.11"
   }
 }