[BREAKING] Python: Update github-copilot-sdk integration to use ToolInvocation/ToolResult types (#4551)

* Update github_copilot package for github-copilot-sdk>=0.1.32 (#4549)

- Update requires-python from >=3.10 to >=3.11
- Remove Python 3.10 classifier
- Update mypy python_version to 3.11
- Update dependency to github-copilot-sdk>=0.1.32
- Fix ToolResult API: use snake_case kwargs (text_result_for_llm,
  result_type) instead of camelCase (textResultForLlm, resultType)
- Update test assertions to use attribute access on ToolResult
- Add ToolResult type assertions to tool handler tests

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix tests to use ToolInvocation dataclass instead of plain dict (#4549)

Update test_github_copilot_agent.py to pass ToolInvocation objects to tool
handlers instead of plain dicts, matching the github-copilot-sdk>=0.1.32 API
where ToolInvocation is a dataclass with an .arguments attribute.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Add regression tests for ToolInvocation contract (#4549)

Add tests to lock in the new ToolInvocation-based calling convention:
- test_tool_handler_rejects_raw_dict_invocation: verifies passing a raw
  dict (old calling convention) raises TypeError/AttributeError
- test_tool_handler_with_empty_arguments: verifies ToolInvocation with
  empty arguments works correctly for no-arg tools

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Revert requires-python to >=3.10 to avoid breaking CI (#4549)

The repo CI runs with Python 3.10 (uv sync --all-packages) and all other
packages require >=3.10. Raising this package to >=3.11 would break the
shared install flow. The SDK dependency version constraint (>=0.1.32) will
enforce any Python version requirement from the SDK itself.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Fix min Python version for github_copilot package to >=3.11

github-copilot-sdk>=0.1.32 requires Python>=3.11, which conflicts
with the package's declared >=3.10 minimum, breaking uv sync.

* Bump py version for GH workflows to 3.11, exclude GHCP sdk from 3.10 items

* Fix uv command

* Fixes

* Update samples

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/packages/github_copilot/pyproject.toml

@@ -3,7 +3,7 @@ name = "agent-framework-github-copilot"
 description = "GitHub Copilot integration for Microsoft Agent Framework."
 authors = [{ name = "Microsoft", email = "af-support@microsoft.com"}]
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 version = "1.0.0b260304"
 license-files = ["LICENSE"]
 urls.homepage = "https://aka.ms/agent-framework"
@@ -15,7 +15,6 @@ classifiers = [
   "Development Status :: 4 - Beta",
   "Intended Audience :: Developers",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
@@ -24,7 +23,7 @@ classifiers = [
 ]
 dependencies = [
     "agent-framework-core>=1.0.0rc3",
-    "github-copilot-sdk>=0.1.0",
+    "github-copilot-sdk>=0.1.32",
 ]
 
 [tool.uv]
@@ -66,7 +65,7 @@ include = ["agent_framework_github_copilot"]
 [tool.mypy]
 plugins = ['pydantic.mypy']
 strict = true
-python_version = "3.10"
+python_version = "3.11"
 ignore_missing_imports = true
 disallow_untyped_defs = true
 no_implicit_optional = true