Update go modules.

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/ProtonMail/gopenpgp/v2 v2.7.4
 	github.com/beevik/etree v1.2.0
 	github.com/gabriel-vasile/mimetype v1.4.3
-	github.com/mdosch/go-xmpp v0.0.2-0.20231102202634-0867a2d90d2f
+	github.com/mdosch/go-xmpp v0.0.2-0.20231102204921-b5d2817f82e7
 	github.com/pborman/getopt/v2 v2.1.0
 	salsa.debian.org/mdosch/xmppsrv v0.2.5
 )

go.sum

@@ -16,8 +16,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gabriel-vasile/mimetype v1.4.3 h1:in2uUcidCuFcDKtdcBxlR0rJ1+fsokWf+uqxgUFjbI0=
 github.com/gabriel-vasile/mimetype v1.4.3/go.mod h1:d8uq/6HKRL6CGdk+aubisF/M5GcPfT7nKyLpA0lbSSk=
-github.com/mdosch/go-xmpp v0.0.2-0.20231102202634-0867a2d90d2f h1:03GBYbzfYQv+rnxk5mhLkj0XKbJZfozuLJloGWICO/k=
-github.com/mdosch/go-xmpp v0.0.2-0.20231102202634-0867a2d90d2f/go.mod h1:WfXW1cCXjSvg8Le5XQc6r+ONLXjHoKyUgTucb4jfaAU=
+github.com/mdosch/go-xmpp v0.0.2-0.20231102204921-b5d2817f82e7 h1:g2wvw0sG9takWLkGOYZkQAfT1u6ve9yAU5g1QASsYSI=
+github.com/mdosch/go-xmpp v0.0.2-0.20231102204921-b5d2817f82e7/go.mod h1:WfXW1cCXjSvg8Le5XQc6r+ONLXjHoKyUgTucb4jfaAU=
 github.com/pborman/getopt/v2 v2.1.0 h1:eNfR+r+dWLdWmV8g5OlpyrTYHkhVNxHBdN2cCrJmOEA=
 github.com/pborman/getopt/v2 v2.1.0/go.mod h1:4NtW75ny4eBw9fO1bhtNdYTlZKYX5/tBLtsOpwKIKd0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=

main.go

@@ -228,6 +228,7 @@ func main() {
 		fmt.Println("Unknown TLS version.")
 		os.Exit(0)
 	}
+	tlsConfig.MaxVersion = tls.VersionTLS12
 
 	// Check whether an authentification mechanism is pinned.
 	authMech, _ := parsePinFile(user)