feat: Deprecate Claude 3 Haiku (#4448)

Deprecation start date: Feb. 23, 2026
End of Support date: Aug. 23, 2026
b/485993204

Author: Sam-Deciga

notebooks/official/generative_ai/anthropic_claude_intro.ipynb

@@ -112,7 +112,7 @@
         "#### Claude 3 Opus (Deprecated)\n",
         "Claude 3 Opus is Anthropic's second-most intelligent AI model, with top-level performance on highly complex tasks.\n",
         "\n",
-        "#### Claude 3 Haiku\n",
+        "#### Claude 3 Haiku (Deprecated)\n",
         "Anthropic Claude 3 Haiku is Anthropic's fastest, most compact vision and text model for near-instant responses to simple queries, meant for seamless AI experiences mimicking human interactions.\n",
         "\n",
         "\n",