Bump rexml from 3.2.6 to 3.2.8

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] <[email protected]>

Gemfile.lock

@@ -205,7 +205,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.9.0)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rubocop (1.59.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
@@ -280,6 +281,7 @@ GEM
       rubocop-performance (~> 1.20.2)
     standardrb (1.0.1)
       standard
+    strscan (3.1.0)
     tabler-rubygem (0.1.4)
       autoprefixer-rails (>= 6.0.3)
     thor (1.3.1)