build(deps): update jekyll-theme-chirpy requirement from ~> 7.1.0 to …

…~> 7.2.2

Updates the requirements on [jekyll-theme-chirpy](https://github.com/cotes2020/jekyll-theme-chirpy) to permit the latest version.
- [Release notes](https://github.com/cotes2020/jekyll-theme-chirpy/releases)
- [Changelog](https://github.com/cotes2020/jekyll-theme-chirpy/blob/master/docs/CHANGELOG.md)
- [Commits](cotes2020/jekyll-theme-chirpy@v7.1.0...v7.2.2)

---
updated-dependencies:
- dependency-name: jekyll-theme-chirpy
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -2,7 +2,7 @@
 
 source "https://rubygems.org"
 
-gem "jekyll-theme-chirpy", "~> 7.1.0"
+gem "jekyll-theme-chirpy", "~> 7.2.2"
 
 group :test do
   gem "html-proofer", "~> 4.4"