chore(deps-dev): bump stylelint-config-saiichihashimoto

Bumps [stylelint-config-saiichihashimoto](https://github.com/saiichihashimoto/stylelint-config-saiichihashimoto) from 2.0.39 to 2.0.40.
- [Release notes](https://github.com/saiichihashimoto/stylelint-config-saiichihashimoto/releases)
- [Commits](saiichihashimoto/stylelint-config-saiichihashimoto@v2.0.39...v2.0.40)

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

package.json

@@ -76,7 +76,7 @@
     "eslint-config-saiichihashimoto": "2.2.17",
     "husky": "5.0.9",
     "husky-config-saiichihashimoto": "1.2.20",
-    "stylelint-config-saiichihashimoto": "2.0.39"
+    "stylelint-config-saiichihashimoto": "2.0.40"
   },
   "engines": {
     "node": "12.8.1"