Include Basque support in changelog-1.6.md

Author: iagobaapellaniz

news/changelog-1.6.md

@@ -122,7 +122,7 @@ All changes included in 1.6:
 - Upgrade `mermaidjs` to 11.2.0.
 - Upgrade Pandoc to 3.4.
 - Upgrade `deno` to 1.46.3.
-- ([#2699])(https://github.com/quarto-dev/quarto-cli/issues/2699)): Respect input/output streams in `quarto pandoc`.
+- ([#2699](https://github.com/quarto-dev/quarto-cli/issues/2699)): Respect input/output streams in `quarto pandoc`.
 - ([#10162](https://github.com/quarto-dev/quarto-cli/issues/10162)): Use Edge on `macOS` as a Chromium browser when available.
 - ([#10235](https://github.com/quarto-dev/quarto-cli/issues/10235)): Configure the CI schedule trigger to activate exclusively for the upstream repository.
 - ([#10295](https://github.com/quarto-dev/quarto-cli/issues/10235)): Fix regression to return error status to shell when `CommandError` is thrown.
@@ -140,3 +140,7 @@ All changes included in 1.6:
 - ([#10936](https://github.com/quarto-dev/quarto-cli/issues/10936)): Use `\\` in `meta` shortcode to escape the following character, allowing keys with `.` in them.
 - ([#11068](https://github.com/quarto-dev/quarto-cli/issues/11068)): use standard location when writing to standard output to avoid breakage under `self-contained: true`.
 - ([#11155](https://github.com/quarto-dev/quarto-cli/pull/11155)): Add cache location information to `quarto check`.
+
+### Languages
+
+- ([#11246](https://github.com/quarto-dev/quarto-cli/pull/11246)): Basque translation for Quarto UI text (credit: @iagobaapellaniz)