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

@@ -37,7 +37,8 @@ GEM
     regexp_parser (2.9.0)
     reline (0.5.1)
       io-console (~> 0.5)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rubocop (1.62.1)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
@@ -74,6 +75,7 @@ GEM
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.20.2)
     stringio (3.1.0)
+    strscan (3.1.0)
     thor (0.20.3)
     unicode-display_width (2.5.0)