build(deps): bump rexml from 3.2.6 to 3.2.8 in /example (#81)

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.6 to 3.2.8.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.6...v3.2.8)

---
updated-dependencies:
- dependency-name: rexml
  dependency-type: indirect
...

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

example/Gemfile.lock

@@ -1,26 +1,29 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    CFPropertyList (3.0.6)
+    CFPropertyList (3.0.7)
+      base64
+      nkf
       rexml
     activesupport (7.0.7.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 1.6, < 2)
       minitest (>= 5.1)
       tzinfo (~> 2.0)
-    addressable (2.8.4)
+    addressable (2.8.6)
       public_suffix (>= 2.0.2, < 6.0)
     algoliasearch (1.27.5)
       httpclient (~> 2.8, >= 2.8.3)
       json (>= 1.5.1)
     atomos (0.1.3)
+    base64 (0.2.0)
     claide (1.1.0)
-    cocoapods (1.12.1)
+    cocoapods (1.15.2)
       addressable (~> 2.8)
       claide (>= 1.0.2, < 2.0)
-      cocoapods-core (= 1.12.1)
+      cocoapods-core (= 1.15.2)
       cocoapods-deintegrate (>= 1.0.3, < 2.0)
-      cocoapods-downloader (>= 1.6.0, < 2.0)
+      cocoapods-downloader (>= 2.1, < 3.0)
       cocoapods-plugins (>= 1.0.0, < 2.0)
       cocoapods-search (>= 1.0.0, < 2.0)
       cocoapods-trunk (>= 1.6.0, < 2.0)
@@ -32,8 +35,8 @@ GEM
       molinillo (~> 0.8.0)
       nap (~> 1.0)
       ruby-macho (>= 2.3.0, < 3.0)
-      xcodeproj (>= 1.21.0, < 2.0)
-    cocoapods-core (1.12.1)
+      xcodeproj (>= 1.23.0, < 2.0)
+    cocoapods-core (1.15.2)
       activesupport (>= 5.0, < 8)
       addressable (~> 2.8)
       algoliasearch (~> 1.0)
@@ -44,7 +47,7 @@ GEM
       public_suffix (~> 4.0)
       typhoeus (~> 1.0)
     cocoapods-deintegrate (1.0.5)
-    cocoapods-downloader (1.6.3)
+    cocoapods-downloader (2.1)
     cocoapods-plugins (1.0.0)
       nap
     cocoapods-search (1.0.1)
@@ -57,27 +60,30 @@ GEM
     escape (0.0.4)
     ethon (0.16.0)
       ffi (>= 1.15.0)
-    ffi (1.15.5)
+    ffi (1.16.3)
     fourflusher (2.3.1)
     fuzzy_match (2.0.4)
     gh_inspector (1.1.3)
     httpclient (2.8.3)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    json (2.6.3)
+    json (2.7.2)
     minitest (5.19.0)
     molinillo (0.8.0)
     nanaimo (0.3.0)
     nap (1.1.0)
     netrc (0.11.0)
+    nkf (0.2.0)
     public_suffix (4.0.7)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     ruby-macho (2.5.1)
-    typhoeus (1.4.0)
+    strscan (3.1.0)
+    typhoeus (1.4.1)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    xcodeproj (1.22.0)
+    xcodeproj (1.24.0)
       CFPropertyList (>= 2.3.3, < 4.0)
       atomos (~> 0.1.3)
       claide (>= 1.0.2, < 2.0)
@@ -89,7 +95,8 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  cocoapods (~> 1.12)
+  activesupport (>= 6.1.7.3, < 7.1.0)
+  cocoapods (~> 1.13)
 
 RUBY VERSION
    ruby 2.7.5p203