Allow specifying an encoding output in fromBase64

Also updates deps

Author: sethvargo

eslint.config.mjs

@@ -14,5 +14,10 @@ export default ts.config(
     },
   },
   { ignores: ['dist/', '**/*.js'] },
+  {
+    globals: {
+      BufferEncoding: 'readonly',
+    },
+  },
   prettierRecommended,
 );