chore(deps): Remove js-yaml resolution that no longer prevents downgrades (#12309)

The "js-yaml": "^4.1.1" resolution is now a no-op — every package that
requests js-yaml in the dep graph already asks for ^4.1.0 or ^4.1.1, both
of which naturally resolve to 4.1.1. Removing the resolution does not
change any installed version.

Audited the remaining resolutions; all still prevent a lower version from
being installed (or are intentional dedupe pins for @types/* and
prosemirror-transform per #12304, plus the i18next-parser compatibility
pin from #12307).

Co-authored-by: Claude <noreply@anthropic.com>

package.json

@@ -381,7 +381,6 @@
     "@types/koa": "2.15.0",
     "prosemirror-transform": "1.10.5",
     "debug": "4.3.4",
-    "js-yaml": "^4.1.1",
     "prismjs": "1.30.0",
     "zod": "^4.3.6",
     "ajv@npm:~8.13.0": "^8.18.0",

yarn.lock

@@ -13665,7 +13665,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"js-yaml@npm:^4.1.1":
+"js-yaml@npm:^4.1.0, js-yaml@npm:^4.1.1":
   version: 4.1.1
   resolution: "js-yaml@npm:4.1.1"
   dependencies: