v2026.5.10

A small release that unblocks s3 backends for users on AWS SSO profiles, plus two minor option-handling fixes that fell out of an internal refactor of the GitHub/GitLab/Forgejo backend.

## Fixed

- **(s3)** s3 backends now work with SSO-based AWS profiles. The `sso` feature of `aws-config` is enabled, so configurations that authenticate via [AWS IAM Identity Center](https://aws.amazon.com/iam/identity-center/) no longer fail with:

  ```
  S3 error: DispatchFailure { ... ProfileFile provider could not be built:
  This behavior requires following cargo feature(s) enabled: sso.
  ```

  ([#9875](https://github.com/jdx/mise/pull/9875) by @Amir-Ahmad).
- **(backend)** Two small behavior fixes landed while centralizing Git backend option reads ([#9838](https://github.com/jdx/mise/pull/9838) by @risu729):
  - Forgejo now applies the same install-time option filtering as GitHub/GitLab.
  - `no_app` is now read through target-aware platform option lookup, so `platforms.<target>.no_app = true` is honored when resolving assets for cross-platform lockfiles.

## Changed

- **(backend)** Internal refactor introducing a shared `BackendOptions` reader and a typed option wrapper for the unified GitHub/GitLab/Forgejo backend. No user-visible behavior change beyond the fixes above ([#9838](https://github.com/jdx/mise/pull/9838) by @risu729).

## New Contributors

* @Amir-Ahmad made their first contribution in [#9875](https://github.com/jdx/mise/pull/9875)

**Full Changelog**: https://github.com/jdx/mise/compare/v2026.5.9...v2026.5.10

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