Bump rexml from 3.2.5 to 3.3.3

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.5 to 3.3.3.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.5...v3.3.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -38,7 +38,8 @@ GEM
       parser (~> 3.1.0)
       rainbow (>= 2.0, < 4.0)
     regexp_parser (2.6.0)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rubocop (1.36.0)
       json (~> 2.3)
       parallel (~> 1.10)
@@ -52,6 +53,7 @@ GEM
     rubocop-ast (1.21.0)
       parser (>= 3.1.1.0)
     ruby-progressbar (1.11.0)
+    strscan (3.1.0)
     tomlrb (2.0.3)
     unicode-display_width (2.3.0)