Bump the bundler group across 1 directory with 2 updates (#1103)

Bumps the bundler group with 2 updates in the /_gems/jekyll-assets directory: [rack](https://github.com/rack/rack) and [rexml](https://github.com/ruby/rexml).


Updates `rack` from 2.2.10 to 2.2.11
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@v2.2.10...v2.2.11)

Updates `rexml` from 3.4.0 to 3.4.1
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.4.0...v3.4.1)

---
updated-dependencies:
- dependency-name: rack
  dependency-type: indirect
  dependency-group: bundler
- dependency-name: rexml
  dependency-type: indirect
  dependency-group: bundler
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kurt Garloff <kurt@garloff.de>

Author: dependabot[bot]

_gems/jekyll-assets/Gemfile.lock

@@ -149,7 +149,7 @@ GEM
       method_source (~> 1.0)
     public_suffix (5.0.1)
     racc (1.8.1)
-    rack (2.2.10)
+    rack (2.2.11)
     rack-test (2.1.0)
       rack (>= 1.3)
     rails-dom-testing (2.2.0)
@@ -170,7 +170,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.6.2)
-    rexml (3.4.0)
+    rexml (3.4.1)
     rouge (3.30.0)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)