chore: upgrade mermaid to ^11.16.1 to address CVE-2026-50159, CVE-2026-71436, CVE-2026-71437, CVE-2026-71438, CVE-2026-71439

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: github-actions[bot]

yarn.lock

@@ -17722,8 +17722,8 @@ __metadata:
   linkType: hard
 
 "mermaid@npm:^11.16.0":
-  version: 11.16.0
-  resolution: "mermaid@npm:11.16.0"
+  version: 11.16.1
+  resolution: "mermaid@npm:11.16.1"
   dependencies:
     "@braintree/sanitize-url": "npm:^7.1.2"
     "@iconify/utils": "npm:^3.0.2"
@@ -17746,7 +17746,7 @@ __metadata:
     stylis: "npm:^4.3.6"
     ts-dedent: "npm:^2.2.0"
     uuid: "npm:^11.1.0 || ^12 || ^13 || ^14.0.0"
-  checksum: 10c0/a14f9bc9db7f1dea65b0d6c0b920236d12ad2812f2a1b11c8b39b3dfb3c22bfce39c77f6a69493203b85880d8008d345c539efe7ae6a31d3dad512833ccfb517
+  checksum: 10c0/a905627d5ad372914bf7c67cb9e491d50f248d3a8458e4ec920033f5ce7387bf419423909ed71d88f54a035ec42987746d64a46055bd2b2a4dc1bc4ceed38c44
   languageName: node
   linkType: hard