## Summary

This PR enables users to mark a URL as an S3 endpoint, at which point uv
will sign requests to that URL by detecting credentials from the
standard AWS environment variables, configuration files, etc.

Signing is handled by the
[reqsign](https://docs.rs/reqsign/latest/reqsign/) crate, which we can
also use in the future to sign requests for other providers.

## Summary

If you provide `--refresh` to `uv lock`, we'll now always resolve (even
though it might return the same result). This is also robust to
`--locked` such that `--refresh --locked` will only fail if the lockfile
changes.

Closes #15997.

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [anyhow](https://redirect.github.com/dtolnay/anyhow) |
workspace.dependencies | patch | `1.0.99` -> `1.0.100` |

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
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---

### Release Notes

<details>
<summary>dtolnay/anyhow (anyhow)</summary>

###
[`v1.0.100`](https://redirect.github.com/dtolnay/anyhow/releases/tag/1.0.100)

[Compare
Source](https://redirect.github.com/dtolnay/anyhow/compare/1.0.99...1.0.100)

- Teach clippy to lint formatting arguments in `bail!`, `ensure!`,
`anyhow!`
([#&#8203;426](https://redirect.github.com/dtolnay/anyhow/issues/426))

</details>

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Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
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Automated update for Python releases.

Co-authored-by: zanieb <2586601+zanieb@users.noreply.github.com>