openssl: Bump to 3.4.0

Prep:

• Needs to be updated to >= 3.0.7 for critical security fix

Build-time testing:

• MSVC 64-bit
• MSVC 32-bit
• UWP Universal
• MinGW 64-bit
• MinGW 32-bit
• Cross-MinGW 64-bit
• Cross-MinGW 32-bit
• macOS Universal
• iOS Universal
• Android Universal

Runtime testing of plugins that use openssl:

• libnice
• srt
• webrtc
• soup (via glib-networking)
  • Test souphttpsrc on macOS and Windows to check certificate loading
• libsrtp