bump bookbinder.gemspec to 7.3.0

Signed-off-by: Elena Sharma <[email protected]>

Author: Michael Trestman

bookbinder.gemspec

@@ -2,7 +2,7 @@ require 'base64'
 
 Gem::Specification.new do |s|
   s.name        = 'bookbindery'
-  s.version     = '7.2.0'
+  s.version     = '7.3.0'
   s.summary     = 'Markdown to Rackup application documentation generator'
   s.description = 'A command line utility to be run in Book repositories to stitch together their constituent Markdown repos into a static-HTML-serving application'
   s.authors     = ['Mike Grafton', 'Lucas Marks', 'Gavin Morgan', 'Nikhil Gajwani', 'Dan Wendorf', 'Brenda Chan', 'Matthew Boedicker', 'Frank Kotsianas', 'Elena Sharma', 'Christa Hartsock']