Portal 2 - Update

An update has been released for Portal 2 game and Authoring Tools.

• UI improvements for Steam Deck support
• Improved performance of controller polling
• Other general in-game performance improvements
• Fixed a misaligned stack pointer crash in Miles audio
• Fixed input action set selection when switching between game and Puzzle Maker
• Fixed some Squirrel engine exploits, reported via HackerOne
• Guard against maps with corrupt mark surfaces, caused by some external tools
• Update Steam SDK
• Updated to DXVK Native 1.9.2a