Add to changelog

Author: cderv

news/changelog-1.7.md

@@ -164,6 +164,7 @@ All changes included in 1.7:
 - ([#12338](https://github.com/quarto-dev/quarto-cli/issues/12338)): Add an additional workaround for the SCSS parser used in color variable extraction.
 - ([#12369](https://github.com/quarto-dev/quarto-cli/pull/12369)): `quarto preview` correctly throws a YAML validation error when a `format` key does not conform.
 - ([#12238](https://gijit.com/quarto-dev/quarto-cli/issues/12238)): Very long error (e.g. in Jupyter Notenook with backtrace) are now no more truncated in the console.
+- ([#9867](https://github.com/quarto-dev/quarto-cli/issues/9867)): Blank lines are now trimmed in Raw HTML Table blocks.
 
 ## Languages