fix(deps): upgrade zod without narrowing timestamp inputs

Upgrade Zod to 4.6.6 and refresh locked license inventories. Preserve REA's established timestamp spellings through one shared UTC/offset grammar, including completion-verifier consumers. Size the stdin resource regression from the child's actual heap capacity.

Fixes #7173
Includes the dependency and inventory changes proposed in #7184.

Co-authored-by: tijo95 <georgesarmede@gmail.com>

docs/error-contract.schema.json

@@ -691,12 +691,8 @@
               "type": "object",
               "properties": {
                 "logical_path": { "type": "string" },
-                "declared_sha256": {
-                  "anyOf": [{ "type": "string" }, { "type": "null" }]
-                },
-                "calculated_sha256": {
-                  "anyOf": [{ "type": "string" }, { "type": "null" }]
-                },
+                "declared_sha256": { "type": ["string", "null"] },
+                "calculated_sha256": { "type": ["string", "null"] },
                 "unpacked": { "type": "boolean" }
               },
               "required": [