chore(deps): update dependency cosmiconfig to v9

packages/gatsby-theme-docs/package.json

@@ -115,7 +115,7 @@
     "@testing-library/react": "14.3.1",
     "@types/gtag.js": "^0.0.20",
     "@types/react": "18.3.5",
-    "cosmiconfig": "^8.0.0",
+    "cosmiconfig": "^9.0.0",
     "gatsby": "5.13.7",
     "gatsby-cli": "5.13.3",
     "react": "18.3.1",

yarn.lock

@@ -3611,7 +3611,7 @@ __metadata:
     "@types/react": 18.3.5
     "@videojs/themes": ^1.0.1
     assert: 2.1.0
-    cosmiconfig: ^8.0.0
+    cosmiconfig: ^9.0.0
     docsearch.js: 2.6.3
     formik: 2.4.6
     gatsby: 5.13.7
@@ -13399,6 +13399,23 @@ __metadata:
   languageName: node
   linkType: hard
 
+"cosmiconfig@npm:^9.0.0":
+  version: 9.0.0
+  resolution: "cosmiconfig@npm:9.0.0"
+  dependencies:
+    env-paths: ^2.2.1
+    import-fresh: ^3.3.0
+    js-yaml: ^4.1.0
+    parse-json: ^5.2.0
+  peerDependencies:
+    typescript: ">=4.9.5"
+  peerDependenciesMeta:
+    typescript:
+      optional: true
+  checksum: a30c424b53d442ea0bdd24cb1b3d0d8687c8dda4a17ab6afcdc439f8964438801619cdb66e8e79f63b9caa3e6586b60d8bab9ce203e72df6c5e80179b971fe8f
+  languageName: node
+  linkType: hard
+
 "create-gatsby@npm:^3.13.1":
   version: 3.13.1
   resolution: "create-gatsby@npm:3.13.1"
@@ -15016,7 +15033,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"env-paths@npm:^2.2.0":
+"env-paths@npm:^2.2.0, env-paths@npm:^2.2.1":
   version: 2.2.1
   resolution: "env-paths@npm:2.2.1"
   checksum: 65b5df55a8bab92229ab2b40dad3b387fad24613263d103a97f91c9fe43ceb21965cd3392b1ccb5d77088021e525c4e0481adb309625d0cb94ade1d1fb8dc17e