Backport blockquote styling from BS3 into BS4 (#239)

* Close #237: Backport blockquote border from BS3 into BS4

* Resave data (GitHub Action)

* update news

Co-authored-by: cpsievert <[email protected]>

Author: cpsievert

NEWS.md

@@ -9,6 +9,7 @@
 * Closed #227: `bs_themer()` now overlays a spinner during Sass compilation (#243).
 * Closed #278: `{bslib}` now includes `rmarkdown::html_document` templates demonstrating example usage with `{bslib}` and `{thematic}` (#288).
 * Closed #231: Upgraded from Bootstrap 4.5.3 to 4.6.0 (#254).
+* Closed #237: <blockquote> tags now have border-left/padding styles with version = 4 (to mirror the version = 3 behavior) (#239).
 * Closed #279: Warnings about low color contrasts are now suppressed by default, unless `shiny::devmode()` is enabled. To enable/disable these warnings, set the new `options(bslib.color_contrast_warnings = )` to `TRUE`/`FALSE` (#287).
 
 ## Bug fixes