fix: update Anthropic SDK minimum version to 0.74.0 for structured outputs

Update the minimum version constraint from >=0.50.0 to >=0.74.0 to ensure structured outputs support is available. Version 0.74.1 includes the necessary .parse() and transform_schema() methods for structured outputs. Verified: - Anthropic SDK 0.74.1 installed - beta.messages.parse() method available - beta.messages.create() with output_format supported - All 15 legacy tests passing 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>

Author: nirga

packages/opentelemetry-instrumentation-anthropic/poetry.lock

@@ -36,7 +36,7 @@ pytest = "^8.2.2"
 pytest-sugar = "1.0.0"
 
 [tool.poetry.group.test.dependencies]
-anthropic = {extras = ["bedrock"], version = ">=0.50.0"}
+anthropic = {extras = ["bedrock"], version = ">=0.74.0"}
 pytest = "^8.2.2"
 pytest-sugar = "1.0.0"
 vcrpy = "^6.0.1"