Add to changelog

Author: cderv

news/changelog-1.8.md

@@ -62,6 +62,10 @@ All changes included in 1.8:
 
 - ([#12775](https://github.com/quarto-dev/quarto-cli/issues/12775)): Convert Quarto-native layouts (divs with `layout` syntax) to Beamer columns, equivalent to using the Pandoc-native syntax of div with `columns` and `column` classes.
 
+### `pdf`
+
+- ([#12732](https://github.com/quarto-dev/quarto-cli/issues/12732)): Correctly detect missing definition files in multiline babel error for search package to auto-install.
+
 ### `hugo-md`
 
 - ([#12676](https://github.com/quarto-dev/quarto-cli/issues/12676)): Add support for rendering layout panels that are not floats.