synergy: update to 1.10.3

Bug fixes:
6546 Filtered out self assigned ip addresses from being displayed
6541 Fixed connected info text to include without TLS encryption
6527 Config app renders incorrectly on high DPI screens
6526 New TLS/SSL socket handled when no socket
6525 Race condition on disconnecting TLS/SSL socket
6521 Access violation in TLS/SSL socket close
6409 Server freezes when clipboard contains an image
3705 Hotkeys not working on Mac server
Enhancements:
6535 Version URL and added stage check to version check
6529 Cleaner redistributable use in Windows installer
6528 More verbose message for Linux display errors
6524 Minimize config app to system tray
6523 Restore auto hide on startup for config app
6522 Double click Windows tray icon to show and hide
6520 Support for 32-bit Linux for legacy users
6519 Support for Ubuntu 14.04 LTS for legacy users
6390 Support for OpenSSL 1.1.1 for better security

(tnn)