Update critical file(s) according to Chirpy v7.3.1

Gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "jekyll-theme-chirpy", "~> 7.2", ">= 7.2.1"
+gem "jekyll-theme-chirpy", "~> 7.3", ">= 7.3.1"
 
 gem "html-proofer", "~> 5.0", group: :test
 

_config.yml

@@ -212,7 +212,8 @@ exclude:
   - tools
   - README.md
   - LICENSE
-  - "*.js"
+  - purgecss.js
+  - "*.config.js"
   - "package*.json"
 
 jekyll-archives:

_data/share.yml

@@ -18,7 +18,7 @@ platforms:
   #
   # - type: Linkedin
   #   icon: "fab fa-linkedin"
-  #   link: "https://www.linkedin.com/sharing/share-offsite/?url=URL"
+  #   link: "https://www.linkedin.com/feed/?shareActive=true&shareUrl=URL"
   #
   # - type: Weibo
   #   icon: "fab fa-weibo"

_plugins/posts-lastmod-hook.rb

@@ -4,10 +4,10 @@
 
 Jekyll::Hooks.register :posts, :post_init do |post|
 
-  commit_num = `git rev-list --count HEAD "#{ post.path }"`.strip
+  commit_num = `git rev-list --count HEAD "#{ post.path }"`
 
   if commit_num.to_i > 1
-    lastmod_date = `git log -1 --pretty="%ad" --date=iso "#{ post.path }"`.strip
+    lastmod_date = `git log -1 --pretty="%ad" --date=iso "#{ post.path }"`
     post.data['last_modified_at'] = lastmod_date
   end