chore: bump version to 0.16.0.dev16 in server.json

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: akolotov

server.json

@@ -2,7 +2,7 @@
   "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
   "name": "com.blockscout/mcp-server",
   "description": "MCP server for Blockscout",
-  "version": "0.16.0.dev15",
+  "version": "0.16.0.dev16",
   "websiteUrl": "https://blockscout.com",
   "repository": {
     "url": "https://github.com/blockscout/mcp-server",