Bump readfiletree from 1.1.1 to 2.0.0

Bumps [readfiletree](https://github.com/rvagg/node-readfiletree) from 1.1.1 to 2.0.0.
- [Release notes](https://github.com/rvagg/node-readfiletree/releases)
- [Commits](rvagg/readfiletree@v1.1.1...v2.0.0)

---
updated-dependencies:
- dependency-name: readfiletree
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -47,7 +47,7 @@
     "prebuildify": "^6.0.1",
     "prebuildify-ci": "^1.0.4",
     "prebuildify-cross": "^5.1.1",
-    "readfiletree": "^1.0.0",
+    "readfiletree": "^2.0.0",
     "rimraf": "^3.0.0",
     "standard": "^17.0.0",
     "tap-arc": "^1.3.2",