fix(deps): update dependency cross-fetch to v4

package.json

@@ -29,7 +29,7 @@
     "url": "[email protected]:decentralized-identity/web-did-resolver.git"
   },
   "dependencies": {
-    "cross-fetch": "^3.1.5",
+    "cross-fetch": "^4.0.0",
     "did-resolver": "^4.0.0"
   },
   "scripts": {

yarn.lock

@@ -3877,10 +3877,10 @@ cosmiconfig@^8.0.0:
     parse-json "^5.0.0"
     path-type "^4.0.0"
 
-cross-fetch@^3.1.5:
-  version "3.1.8"
-  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-3.1.8.tgz#0327eba65fd68a7d119f8fb2bf9334a1a7956f82"
-  integrity sha512-cvA+JwZoU0Xq+h6WkMvAUqPEYy92Obet6UdKLfW60qn99ftItKjB5T+BkyWOFWe2pUyfQ+IJHmpOTznqk1M6Kg==
+cross-fetch@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/cross-fetch/-/cross-fetch-4.0.0.tgz#f037aef1580bb3a1a35164ea2a848ba81b445983"
+  integrity sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==
   dependencies:
     node-fetch "^2.6.12"