Update anthropic_claude_3_intro.ipynb - Sonnet 3.7 Deprecation (#4364)

Given information above. Approved.

Author: Sam-Deciga

notebooks/official/generative_ai/anthropic_claude_3_intro.ipynb

@@ -78,7 +78,7 @@
         "#### Claude Opus 4\n",
         "Anthropic’s most powerful model yet and the state-of-the-art coding model. It delivers sustained performance on long-running tasks that require focused effort and thousands of steps, significantly expanding what AI agents can solve. Claude Opus 4 is ideal for powering frontier agent products and features.\n",
         "\n",
-        "#### Claude 3.7 Sonnet\n",
+        "#### Claude 3.7 Sonnet (Deprecated)\n",
         "Industry-leading model for coding and powering AI agents—and the first Claude model to offer extended thinking.\n",
         "\n",
         "#### Claude 3.5 Sonnet v2\n",