Bump jekyll-include-cache from 0.2.0 to 0.2.1 (#57)

Bumps [jekyll-include-cache](https://github.com/benbalter/jekyll-include-cache) from 0.2.0 to 0.2.1.
- [Release notes](https://github.com/benbalter/jekyll-include-cache/releases)
- [Commits](benbalter/jekyll-include-cache@v0.2.0...v0.2.1)

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

Author: dependabot[bot]

Gemfile.lock

@@ -121,7 +121,7 @@ GEM
     jekyll-github-metadata (2.13.0)
       jekyll (>= 3.4, < 5.0)
       octokit (~> 4.0, != 4.4.0)
-    jekyll-include-cache (0.2.0)
+    jekyll-include-cache (0.2.1)
       jekyll (>= 3.7, < 5.0)
     jekyll-mentions (1.6.0)
       html-pipeline (~> 2.3)