feat(registries): harden registry fetches against SSRF (CWE-918, MCP-1076)#745

Dumbris merged 3 commits into

mainsmart-mcp-proxy/mcpproxy-go:mainfrom

security/mcp-1076-registry-ssrfsmart-mcp-proxy/mcpproxy-go:security/mcp-1076-registry-ssrfCopy head branch name to clipboard