Author extract using correct as-at state (#5598)

* Author extract using correct as-at state

* Align header retrieval

* Dedupe

* Deupe

* Adjust

* Remove deprecated events.at

* 10.3.4

packages/types-codec/package.json

@@ -18,7 +18,7 @@
     "./detectPackage.cjs"
   ],
   "type": "module",
-  "version": "10.3.3",
+  "version": "10.3.4",
   "main": "index.js",
   "dependencies": {
     "@polkadot/util": "^11.1.3",
@@ -26,9 +26,9 @@
     "tslib": "^2.5.0"
   },
   "devDependencies": {
-    "@polkadot/types": "10.3.3",
-    "@polkadot/types-augment": "10.3.3",
-    "@polkadot/types-support": "10.3.3",
+    "@polkadot/types": "10.3.4",
+    "@polkadot/types-augment": "10.3.4",
+    "@polkadot/types-support": "10.3.4",
     "@polkadot/util-crypto": "^11.1.3"
   }
 }