Bump textlint from 15.3.0 to 15.4.0

Bumps [textlint](https://github.com/textlint/textlint) from 15.3.0 to 15.4.0.
- [Release notes](https://github.com/textlint/textlint/releases)
- [Commits](textlint/textlint@v15.3.0...v15.4.0)

---
updated-dependencies:
- dependency-name: textlint
  dependency-version: 15.4.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -27,7 +27,7 @@
     "q-io": "1.13.4",
     "sleep": "6.3.0",
     "svgexport": "0.4.2",
-    "textlint": "15.3.0",
+    "textlint": "15.4.0",
     "textlint-rule-incremental-headers": "0.2.0",
     "textlint-rule-preset-japanese": "10.0.4",
     "textlint-rule-preset-jtf-style": "3.0.3",