chore(deps): update dependency @netlify/build to ^29.56.0

Author: renovate[bot]

package.json

@@ -62,7 +62,7 @@
     "eslint-plugin-unicorn": "^49.0.0",
     "husky": "^4.3.0",
     "netlify-cli": "^17.37.2",
-    "@netlify/build": "^29.28.2",
+    "@netlify/build": "^29.56.0",
     "npm-run-all2": "^6.0.0",
     "prettier": "^2.1.2"
   },