Update @modelcontextprotocol/sdk to 1.23.0 in TypeScript servers (#3065)

Update the SDK from ^1.19.1 to ^1.23.0 in all TypeScript reference servers:
- everything
- filesystem
- memory
- sequentialthinking

Also update everything server for SDK breaking changes:
- Update zod to ^3.25.0 (zod v4 compatibility)
- Fix ToolInput/ToolOutput types to use Tool["inputSchema"] instead of
  inferring from zod schemas
- Fix result.content handling to support array format

Co-authored-by: Felix Weinberger <3823880+felixweinberger@users.noreply.github.com>

src/everything/package.json

@@ -22,11 +22,11 @@
     "start:streamableHttp": "node dist/streamableHttp.js"
   },
   "dependencies": {
-    "@modelcontextprotocol/sdk": "^1.19.1",
+    "@modelcontextprotocol/sdk": "^1.23.0",
     "cors": "^2.8.5",
     "express": "^4.21.1",
     "jszip": "^3.10.1",
-    "zod": "^3.23.8",
+    "zod": "^3.25.0",
     "zod-to-json-schema": "^3.23.5"
   },
   "devDependencies": {