chore(deps): update dependency @anthropic-ai/mcpb to ^1.2.0 (#187)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -65,7 +65,7 @@
     "zod": "^3.25.76"
   },
   "devDependencies": {
-    "@anthropic-ai/mcpb": "^1.1.5",
+    "@anthropic-ai/mcpb": "^1.2.0",
     "@commitlint/cli": "^19.8.1",
     "@commitlint/config-conventional": "^19.8.1",
     "@cybozu/eslint-config": "^24.2.0",