Bump rexml from 3.2.6 to 3.2.8 (#568)

* 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]>

* Update gemset.nix

---------

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

Gemfile.lock

@@ -230,7 +230,8 @@ GEM
     regexp_parser (2.9.0)
     reline (0.5.3)
       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)
@@ -265,6 +266,7 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.3)
     stringio (3.1.0)
+    strscan (3.1.0)
     thor (1.3.1)
     timeout (0.4.1)
     tzinfo (2.0.6)