build: update dependency marked to v18

See associated pull request for more information.

Author: angular-robot

adev/package.json

@@ -76,7 +76,7 @@
     "karma-coverage": "2.2.1",
     "karma-jasmine": "5.1.0",
     "karma-jasmine-html-reporter": "2.2.0",
-    "marked": "17.0.5",
+    "marked": "18.0.0",
     "mermaid": "11.14.0",
     "ngx-progressbar": "14.0.0",
     "open-in-idx": "0.1.1",

adev/shared-docs/package.json

@@ -19,7 +19,7 @@
     "emoji-regex": "~10.6.0",
     "fflate": "^0.8.2",
     "jsdom": "~29.0.0",
-    "marked": "~17.0.0",
+    "marked": "~18.0.0",
     "mermaid": "^11.0.0",
     "shiki": "^4.0.0",
     "tinyglobby": "^0.2.12"