v0.61.0

## Release Notes

#### ✨ Highlights

This Pixi release features a new and improved `pixi upload` functionality, that is shared with `rattler-build` through `rattler`.


#### Changed

- Add list_environments, add_environment, remove_environment to Pixi API by @haecker-felix in [#4918](https://github.com/prefix-dev/pixi/pull/4918)
- Optimize git checkouts in pypi tests by @baszalmstra in [#5035](https://github.com/prefix-dev/pixi/pull/5035)
- Use local git fixtures for tests by @baszalmstra in [#5047](https://github.com/prefix-dev/pixi/pull/5047)
- Optimize pypi add tests by @baszalmstra in [#5048](https://github.com/prefix-dev/pixi/pull/5048)
- Allow loading of native certificate store by @tdejager in [#5013](https://github.com/prefix-dev/pixi/pull/5013)
- New rattler-upload functionality by @tdejager in [#5017](https://github.com/prefix-dev/pixi/pull/5017)
- Optimize integration tests to use local fixtures by @baszalmstra in [#5064](https://github.com/prefix-dev/pixi/pull/5064)


#### Fixed

- Mark more tests as `online_tests` by @mgorny in [#5060](https://github.com/prefix-dev/pixi/pull/5060)
- Use absolute_path() when computing workspace root to preserve symlinks by @claydugo in [#5059](https://github.com/prefix-dev/pixi/pull/5059)
- Index was being ignored during upgrades by @tdejager in [#5062](https://github.com/prefix-dev/pixi/pull/5062)
- Use single quotes for CLI arg joining to fix backslash escaping by @baszalmstra in [#5063](https://github.com/prefix-dev/pixi/pull/5063)
- Don't assume that shell config file ends on newline by @MikkelSchubert in [#4873](https://github.com/prefix-dev/pixi/pull/4873)
- Fix docs-dev post setup-pixi run by @ruben-arts in [#5088](https://github.com/prefix-dev/pixi/pull/5088)
- Mark `test_add_url_no_channel` as slow by @Hofer-Julian in [#5093](https://github.com/prefix-dev/pixi/pull/5093)


#### New Contributors
* @MikkelSchubert made their first contribution in [#4873](https://github.com/prefix-dev/pixi/pull/4873)

## Download pixi 0.61.0

|  File  | Platform | Checksum |
|--------|----------|----------|
| [pixi-aarch64-apple-darwin.tar.gz](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-apple-darwin.tar.gz) | Apple Silicon macOS | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-apple-darwin.tar.gz.sha256) |
| [pixi-x86_64-apple-darwin.tar.gz](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-apple-darwin.tar.gz) | Intel macOS | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-apple-darwin.tar.gz.sha256) |
| [pixi-aarch64-pc-windows-msvc.zip](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-pc-windows-msvc.zip) | ARM64 Windows | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-pc-windows-msvc.zip.sha256) |
| [pixi-aarch64-pc-windows-msvc.msi](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-pc-windows-msvc.msi) | ARM64 Windows | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-pc-windows-msvc.msi.sha256) |
| [pixi-x86_64-pc-windows-msvc.zip](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-pc-windows-msvc.zip) | x64 Windows | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-pc-windows-msvc.zip.sha256) |
| [pixi-x86_64-pc-windows-msvc.msi](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-pc-windows-msvc.msi) | x64 Windows | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-pc-windows-msvc.msi.sha256) |
| [pixi-aarch64-unknown-linux-musl.tar.gz](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-unknown-linux-musl.tar.gz) | ARM64 MUSL Linux | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-aarch64-unknown-linux-musl.tar.gz.sha256) |
| [pixi-x86_64-unknown-linux-musl.tar.gz](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-unknown-linux-musl.tar.gz) | x64 MUSL Linux | [checksum](https://github.com/prefix-dev/pixi/releases/download/v0.61.0/pixi-x86_64-unknown-linux-musl.tar.gz.sha256) |