update CRAN comments

Author: gadenbuie

cran-comments.md

@@ -9,6 +9,10 @@ Issues with CRAN packages are summarised below.
 
 ### New problems
 
+This version of bslib uses the new `brand.yml` package for brand themes. Unlike the previous implementation, brand.yml provides more detailed validation of brand themes, but this has led to one package failing tests.
+
+* OmopViewer: Submitted a patch to fix this on 2026-01-21, awaiting maintainer response. https://github.com/OHDSI/OmopViewer/pull/355
+
 This version of bslib introduces a new function `show_toast()`, which conflicts with a function of the same name in the shinyWidgets package. Several packages on CRAN fully import both the bslib and shinyWidgets namespaces, leading to warnings during installation about the function name conflict.
 
 * PKbioanalysis: emailed maintainer Omar Ashkar on 2025-12-19, maintainer confirmed awareness and willingness to address in a future release on the same day.