Bump git from 1.11.0 to 1.13.0

Bumps [git](https://github.com/ruby-git/ruby-git) from 1.11.0 to 1.13.0.
- [Release notes](https://github.com/ruby-git/ruby-git/releases)
- [Changelog](https://github.com/ruby-git/ruby-git/blob/master/CHANGELOG.md)
- [Commits](ruby-git/ruby-git@v1.11.0...v1.13.0)

---
updated-dependencies:
- dependency-name: git
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -7,7 +7,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
-    addressable (2.4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     coderay (1.1.3)
     coffee-script (2.4.1)
       coffee-script-source
@@ -25,23 +26,43 @@ GEM
     ffi (1.15.5)
     forwardable-extended (2.6.0)
     gemoji (2.1.0)
-    git (1.11.0)
+    git (1.13.0)
+      addressable (~> 2.8)
       rchardet (~> 1.8)
-    github-pages (103)
+    github-pages (113)
       activesupport (= 4.2.7)
-      github-pages-health-check (= 1.2.0)
-      jekyll (= 3.3.0)
+      github-pages-health-check (= 1.3.0)
+      jekyll (= 3.3.1)
+      jekyll-avatar (= 0.4.2)
       jekyll-coffeescript (= 1.0.1)
+      jekyll-default-layout (= 0.1.4)
       jekyll-feed (= 0.8.0)
       jekyll-gist (= 1.4.0)
-      jekyll-github-metadata (= 2.2.0)
+      jekyll-github-metadata (= 2.3.0)
       jekyll-mentions (= 1.2.0)
+      jekyll-optional-front-matter (= 0.1.2)
       jekyll-paginate (= 1.1.0)
+      jekyll-readme-index (= 0.0.3)
       jekyll-redirect-from (= 0.11.0)
+      jekyll-relative-links (= 0.2.1)
       jekyll-sass-converter (= 1.3.0)
       jekyll-seo-tag (= 2.1.0)
       jekyll-sitemap (= 0.12.0)
       jekyll-swiss (= 0.4.0)
+      jekyll-theme-architect (= 0.0.3)
+      jekyll-theme-cayman (= 0.0.3)
+      jekyll-theme-dinky (= 0.0.3)
+      jekyll-theme-hacker (= 0.0.3)
+      jekyll-theme-leap-day (= 0.0.3)
+      jekyll-theme-merlot (= 0.0.3)
+      jekyll-theme-midnight (= 0.0.3)
+      jekyll-theme-minimal (= 0.0.3)
+      jekyll-theme-modernist (= 0.0.3)
+      jekyll-theme-primer (= 0.1.5)
+      jekyll-theme-slate (= 0.0.3)
+      jekyll-theme-tactile (= 0.0.3)
+      jekyll-theme-time-machine (= 0.0.3)
+      jekyll-titles-from-headings (= 0.1.3)
       jemoji (= 0.7.0)
       kramdown (= 1.11.1)
       liquid (= 3.0.6)
@@ -50,18 +71,18 @@ GEM
       minima (= 2.0.0)
       rouge (= 1.11.1)
       terminal-table (~> 1.4)
-    github-pages-health-check (1.2.0)
+    github-pages-health-check (1.3.0)
       addressable (~> 2.3)
       net-dns (~> 0.8)
       octokit (~> 4.0)
-      public_suffix (~> 1.4)
+      public_suffix (~> 2.0)
       typhoeus (~> 0.7)
     html-pipeline (2.14.3)
       activesupport (>= 2)
       nokogiri (>= 1.4)
     i18n (0.9.5)
       concurrent-ruby (~> 1.0)
-    jekyll (3.3.0)
+    jekyll (3.3.1)
       addressable (~> 2.4)
       colorator (~> 1.0)
       jekyll-sass-converter (~> 1.0)
@@ -72,31 +93,67 @@ GEM
       pathutil (~> 0.9)
       rouge (~> 1.7)
       safe_yaml (~> 1.0)
-    jekyll-avatar (0.8.0)
-      jekyll (>= 3.0, < 5.0)
+    jekyll-avatar (0.4.2)
+      jekyll (~> 3.0)
     jekyll-coffeescript (1.0.1)
       coffee-script (~> 2.2)
+    jekyll-default-layout (0.1.4)
+      jekyll (~> 3.0)
     jekyll-feed (0.8.0)
       jekyll (~> 3.3)
     jekyll-gist (1.4.0)
       octokit (~> 4.2)
-    jekyll-github-metadata (2.2.0)
+    jekyll-github-metadata (2.3.0)
       jekyll (~> 3.1)
       octokit (~> 4.0, != 4.4.0)
     jekyll-mentions (1.2.0)
       activesupport (~> 4.0)
       html-pipeline (~> 2.3)
       jekyll (~> 3.0)
+    jekyll-optional-front-matter (0.1.2)
+      jekyll (~> 3.0)
     jekyll-paginate (1.1.0)
+    jekyll-readme-index (0.0.3)
+      jekyll (~> 3.0)
     jekyll-redirect-from (0.11.0)
       jekyll (>= 2.0)
+    jekyll-relative-links (0.2.1)
+      jekyll (~> 3.3)
     jekyll-sass-converter (1.3.0)
       sass (~> 3.2)
     jekyll-seo-tag (2.1.0)
       jekyll (~> 3.3)
     jekyll-sitemap (0.12.0)
       jekyll (~> 3.3)
     jekyll-swiss (0.4.0)
+    jekyll-theme-architect (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-cayman (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-dinky (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-hacker (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-leap-day (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-merlot (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-midnight (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-minimal (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-modernist (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-primer (0.1.5)
+      jekyll (~> 3.3)
+    jekyll-theme-slate (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-tactile (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-theme-time-machine (0.0.3)
+      jekyll (~> 3.3)
+    jekyll-titles-from-headings (0.1.3)
+      jekyll (~> 3.3)
     jekyll-watch (1.5.1)
       listen (~> 3.0)
     jemoji (0.7.0)
@@ -126,7 +183,7 @@ GEM
       sawyer (~> 0.9)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (1.5.3)
+    public_suffix (2.0.5)
     racc (1.6.2)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)