Bump chromatic to 6.17.2 (#50148)

It's failing in CI due to a timeout in submitting Storybook
verifications, and the latest versions mentions increased timouts,
sounds logical to try :)

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package.json

@@ -240,7 +240,7 @@
     "bundlesize2": "^0.0.31",
     "chalk": "^4.1.0",
     "chokidar-cli": "^2.1.0",
-    "chromatic": "^6.11.4",
+    "chromatic": "^6.17.2",
     "chrome-webstore-upload-cli": "^1.2.0",
     "command-exists": "^1.2.9",
     "compression": "^1.7.4",