Update critical file(s) according to Chirpy v7.2.4

Gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "jekyll-theme-chirpy", "~> 7.2", ">= 7.2.3"
+gem "jekyll-theme-chirpy", "~> 7.2", ">= 7.2.4"
 
 gem "html-proofer", "~> 5.0", group: :test
 

_config.yml

@@ -25,9 +25,6 @@ description: >- # used by seo meta and the atom feed
 # E.g. 'https://username.github.io', note that it does not end with a '/'.
 url: ""
 
-# Whether to publish posts with a future date
-future: false
-
 github:
   username: github_username # change to your GitHub username