CRAN Release v0.8.28

• Shiny applications and Shiny documents no longer include an implicit
  dependency on ragg when that package is present
  in the local environment. This reverts a change introduced in 0.8.27.

  Shiny applications should add an explicit dependency on ragg (usually with
  a library("ragg") statement) to see it used by shiny::renderPlot (via
  shiny::plotPNG).

  The documentation for shiny::plotPNG explains the use of ragg. (#598)

• Fix bug that prevented publishing or writing manifests for non-Quarto content
  when a Quarto path was provided to the quarto argument of writeManifest(),
  deployApp(), and related functions.

• Escape account names when performing a directory search to determine an
  appropriate server. (#620)