feat: add Claude Opus 4.8 to ClaudeComputerUseLlm type (#88)

Author: shrisukhani

hyperbrowser/models/consts.py

@@ -65,6 +65,7 @@
     "claude-opus-4-5",
     "claude-opus-4-6",
     "claude-opus-4-7",
+    "claude-opus-4-8",
     "claude-haiku-4-5-20251001",
     "claude-sonnet-4-6",
     "claude-sonnet-4-5",