fix: Remove non-existent CHANGELOG.md references from UV and Poetry templates

[Copilot]

uv build fails with "No such file or directory" when building generated clients because the pyproject.toml references a CHANGELOG.md file that is never created.

Changes

• UV template: Removed data = ["CHANGELOG.md"] from [tool.uv.build-backend] section
• Poetry template: Removed "CHANGELOG.md" from include array
• Test fixtures: Updated 6 snapshot and golden-record files to match new template output

Example

Generated clients now produce clean pyproject.toml files:

# UV
[tool.uv.build-backend]
module-name = "my_client"
module-root = ""

# Poetry
include = ["my_client/py.typed"]

Previously, these would include data = ["CHANGELOG.md"] and include = ["CHANGELOG.md", "my_client/py.typed"] respectively, causing build failures.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Unable to build generated client using uv</issue_title>
<issue_description>Describe the bug
uv build crashes:

Building source distribution (uv build backend)...
Building wheel from source distribution (uv build backend)...
  × Failed to build `/path/to/client`
  ├─▶ Failed to walk source tree: `/Users/emil/.cache/uv/sdists-v9/.tmphKI5f2/client-2.64.0/CHANGELOG.md`
  ├─▶ IO error for operation on /Users/emil/.cache/uv/sdists-v9/.tmphKI5f2/client-2.64.0/CHANGELOG.md: No such file or directory (os error 2)
  ╰─▶ No such file or directory (os error 2)

Probably related to this part in pyproject.toml:

[tool.uv.build-backend]
module-name = "arboair_microservice"
module-root = ""
data = [
    "CHANGELOG.md",
]

But there is no changelog.md generated.

OpenAPI Spec File
N/A

Desktop (please complete the following information):

• OS: macOS 15.7.1
• Python Version: 3.12
• openapi-python-client version 0.27.0

Additional context
Add any other context about the problem here.

</issue_description>

Comments on the Issue (you are @copilot in this section)

@dbanty Weird, don't know why that's in there 😅. Looks like it's in the Poetry template too. We should remove it from both.

• Fixes Unable to build generated client using uv #1343

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.