GHSA-XCF7-Q56X-78GH github.com/pires/go-proxyproto vulnerable to DoS via Connection descriptor exhaustion

The package github.com/pires/go-proxyproto before 0.6.1 is vulnerable to Denial of Service DoS via creating connections without the proxy protocol header. While this issue was patched in 0.6.0, the fix introduced additional issues which were subsequently patched in 0.6.1...