Update ratatui requirement from 0.25 to 0.26

Updates the requirements on [ratatui](https://github.com/ratatui-org/ratatui) to permit the latest version.
- [Release notes](https://github.com/ratatui-org/ratatui/releases)
- [Changelog](https://github.com/ratatui-org/ratatui/blob/main/CHANGELOG.md)
- [Commits](ratatui/ratatui@v0.25.0...v0.26.0)

---
updated-dependencies:
- dependency-name: ratatui
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -5,6 +5,6 @@ edition = "2021"
 
 [dependencies]
 base16-palettes = "0.1.0"
-ratatui = { version = "0.25", default-features = false }
+ratatui = { version = "0.26", default-features = false }
 web-sys = { version = "0.3", features = ["Window", "Screen", "TouchEvent", "TouchList", "Touch", "CssStyleSheet", "StyleSheetList", "CssRuleList", "CssRule"] }
 yew = { version = "0.21", features = ["csr"] }