build(deps): bump postcss from 8.5.8 to 8.5.13 in /single-page-app/ui

Co-authored-by: phlax <454682+phlax@users.noreply.github.com>

Author: Copilot

single-page-app/ui/yarn.lock

@@ -3994,9 +3994,9 @@ possible-typed-array-names@^1.0.0:
   integrity sha512-d7Uw+eZoloe0EHDIYoe+bQ5WXnGMOpmiZFTuMWCwpjzzkL2nTjcKiAk4hh8TjnGye2TwWOk3UXucZ+3rbmBa8Q==
 
 postcss@^8.5.8:
-  version "8.5.8"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.8.tgz#6230ecc8fb02e7a0f6982e53990937857e13f399"
-  integrity sha512-OW/rX8O/jXnm82Ey1k44pObPtdblfiuWnrd8X7GJ7emImCOstunGbXUpp7HdBrFQX6rJzn3sPT397Wp5aCwCHg==
+  version "8.5.13"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.5.13.tgz#6cfaf647f2e7ef69850208eccd849e0d3f65d420"
+  integrity sha512-qif0+jGGZoLWdHey3UFHHWP0H7Gbmsk8T5VEqyYFbWqPr1XqvLGBbk/sl8V5exGmcYJklJOhOQq1pV9IcsiFag==
   dependencies:
     nanoid "^3.3.11"
     picocolors "^1.1.1"