Bump sentence-splitter from 4.2.1 to 5.0.0

Bumps [sentence-splitter](https://github.com/textlint-rule/sentence-splitter) from 4.2.1 to 5.0.0.
- [Release notes](https://github.com/textlint-rule/sentence-splitter/releases)
- [Commits](textlint-rule/sentence-splitter@v4.2.1...v5.0.0)

---
updated-dependencies:
- dependency-name: sentence-splitter
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -42,7 +42,7 @@
     "recursive-readdir": "^2.2.2",
     "sanitize-html": "^2.3.3",
     "sass": "^1.54.4",
-    "sentence-splitter": "^4.2.1",
+    "sentence-splitter": "^5.0.0",
     "util": "^0.12.4",
     "whatwg-fetch": "^3.6.2"
   },