chore(deps): update dependency vanilla-framework to v4

package.json

@@ -34,7 +34,7 @@
   "dependencies": {
     "@canonical/cookie-policy": "3.4.0",
     "@canonical/global-nav": "3.2.4",
-    "vanilla-framework": "3.14.0"
+    "vanilla-framework": "4.2.0"
   },
   "devDependencies": {
     "autoprefixer": "10.4.1",

yarn.lock

@@ -3247,10 +3247,10 @@ [email protected]:
     sass "1.58.0"
     yaml "1.10.2"
 
-vanilla-framework@3.14.0:
-  version "3.14.0"
-  resolved "https://registry.yarnpkg.com/vanilla-framework/-/vanilla-framework-3.14.0.tgz#c5b94d7e2e3ef2d3c9f24091b7efc4abf8054cf9"
-  integrity sha512-06Vr2nhjU72N9IivwCLcd7FgqFNopkiHfzANJUCNdvs8FkbTjIB7fcsFgJ6O76KnOBsEiAoJAssRkTh9x3a2jw==
+vanilla-framework@4.2.0:
+  version "4.2.0"
+  resolved "https://registry.yarnpkg.com/vanilla-framework/-/vanilla-framework-4.2.0.tgz#7391818e31ff4fdf222e8e1d45f2861ccf502282"
+  integrity sha512-Y+Ps2CWDp1v5uzUq2tv+T8LjUfHOgdDVhsarGFPa5ICSmXYS/w/2tWyNr1LAbJtZdYAuFOXDHSqYl0aCnGRUTg==
 
 verbalize@^0.1.2:
   version "0.1.2"