Update CHANGELOG

Author: juliasilge

apps/vscode/CHANGELOG.md

@@ -4,6 +4,7 @@
 
 - Fixed an issue where attribute values containing '='s could be truncated in some scenarios (<https://github.com/quarto-dev/quarto/pull/814>).
 - Fixed an issue where a loading spinner for qmd previews wasn't dismissed on preview errors (<https://github.com/quarto-dev/quarto/pull/823>)
+- Diagnostics are no longer reported for internal temporary virtual document files (<https://github.com/quarto-dev/quarto/pull/832>).
 
 ## 1.124.0 (Release on 2025-08-20)