fix: upgrade elkjs from 0.8.2 to 0.9.0

Snyk has created this PR to upgrade elkjs from 0.8.2 to 0.9.0.

See this package in npm:
https://www.npmjs.com/package/elkjs

See this project in Snyk:
https://app.snyk.io/org/sammytezzy/project/54d742ef-f52e-4145-a5b1-9d7e5208377f?utm_source=github&utm_medium=referral&page=upgrade-pr

packages/mermaid/package.json

@@ -66,7 +66,7 @@
     "dagre-d3-es": "7.0.10",
     "dayjs": "^1.11.7",
     "dompurify": "3.0.5",
-    "elkjs": "^0.8.2",
+    "elkjs": "^0.9.0",
     "khroma": "^2.0.0",
     "lodash-es": "^4.17.21",
     "mdast-util-from-markdown": "^1.3.0",