Bump octicons from 19.16.0 to 19.18.0 (#3682)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -154,7 +154,7 @@ GEM
       racc (~> 1.4)
     nokogiri (1.18.9-x86_64-linux-gnu)
       racc (~> 1.4)
-    octicons (19.16.0)
+    octicons (19.18.0)
     parallel (1.27.0)
     parser (3.3.9.0)
       ast (~> 2.4.1)