build(deps-dev): bump doctoc from 1.4.0 to 2.0.0 (#1359)

Bumps [doctoc](https://github.com/thlorenz/doctoc) from 1.4.0 to 2.0.0.
- [Release notes](https://github.com/thlorenz/doctoc/releases)
- [Commits](https://github.com/thlorenz/doctoc/compare/v1.4.0...v2.0.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

package.json

@@ -45,7 +45,7 @@
     "assert-diff": "^3.0.0",
     "buffer": "^6.0.2",
     "crypto-browserify": "^3.12.0",
-    "doctoc": "^1.4.0",
+    "doctoc": "^2.0.0",
     "ejs": "^3.0.1",
     "eslint": "^6.5.1",
     "eventemitter2": "^6.0.0",