Upgrade agent-js (#2446)

This PR upgrades `agent-js` to the latest version because it
includes an improvement to the errors thrown when failing to
decode cbor.

package.json

@@ -57,13 +57,13 @@
     "webdriverio": "8.32.3"
   },
   "dependencies": {
-    "@dfinity/agent": "^1.1.1",
-    "@dfinity/auth-client": "^1.1.1",
-    "@dfinity/candid": "^1.1.1",
-    "@dfinity/identity": "^1.1.1",
+    "@dfinity/agent": "^1.2.1",
+    "@dfinity/auth-client": "^1.2.1",
+    "@dfinity/candid": "^1.2.1",
+    "@dfinity/identity": "^1.2.1",
     "@dfinity/internet-identity-vc-api": "*",
-    "@dfinity/principal": "^1.1.1",
-    "@dfinity/utils": "^2.1.2",
+    "@dfinity/principal": "^1.2.1",
+    "@dfinity/utils": "^2.1.3",
     "bip39": "^3.0.4",
     "buffer": "^6.0.3",
     "dompurify": "^3.0.6",