Bump the bundler group across 1 directory with 2 updates

Bumps the bundler group with 2 updates in the /docs directory: [addressable](https://github.com/sporkmonger/addressable) and [rexml](https://github.com/ruby/rexml).


Updates `addressable` from 2.8.7 to 2.9.0
- [Changelog](https://github.com/sporkmonger/addressable/blob/main/CHANGELOG.md)
- [Commits](sporkmonger/addressable@addressable-2.8.7...addressable-2.9.0)

Updates `rexml` from 3.4.1 to 3.4.2
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.4.1...v3.4.2)

---
updated-dependencies:
- dependency-name: addressable
  dependency-version: 2.9.0
  dependency-type: indirect
  dependency-group: bundler
- dependency-name: rexml
  dependency-version: 3.4.2
  dependency-type: direct:production
  dependency-group: bundler
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs/Gemfile.lock

@@ -12,8 +12,8 @@ GIT
 GEM
   remote: https://rubygems.org/
   specs:
-    addressable (2.8.7)
-      public_suffix (>= 2.0.2, < 7.0)
+    addressable (2.9.0)
+      public_suffix (>= 2.0.2, < 8.0)
     byebug (11.1.3)
     coderay (1.1.3)
     colorator (1.1.0)
@@ -71,12 +71,12 @@ GEM
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
-    public_suffix (6.0.1)
+    public_suffix (7.0.5)
     rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.4.1)
+    rexml (3.4.2)
     rouge (4.5.1)
     safe_yaml (1.0.5)
     sassc (2.4.0)