Upgrade @matt.kantor/either package

Author: mkantor

package-lock.json

@@ -21,7 +21,7 @@
     "typescript": "^5.8.3"
   },
   "dependencies": {
-    "@matt.kantor/either": "^1.0.0",
+    "@matt.kantor/either": "^1.2.0",
     "@matt.kantor/option": "^1.0.0",
     "@matt.kantor/parsing": "^2.0.0",
     "kleur": "^4.1.5"