scipp/essreflectometry: 25.08.0

What's Changed

• fix: shape and size of the estia detector by @jokasimr in https://github.com/scipp/essreflectometry/pull/162
• fix: better reduction setting to avoid including transmitted beam by @jokasimr in https://github.com/scipp/essreflectometry/pull/164
• Split user guide and cards on index pages by @jl-wynen in https://github.com/scipp/essreflectometry/pull/163
• ess copier update by @jokasimr in https://github.com/scipp/essreflectometry/pull/165
• docs: add description of data reduction procedure by @jokasimr in https://github.com/scipp/essreflectometry/pull/65
• Copier update + lower pins by @jokasimr in https://github.com/scipp/essreflectometry/pull/167

Full Changelog: https://github.com/scipp/essreflectometry/compare/25.05.1...25.08.0