bump rexml from 3.3.6 to 3.3.9 (#61)

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

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

Gemfile.lock

@@ -32,8 +32,7 @@ GEM
     rack (3.0.11)
     rainbow (3.1.1)
     regexp_parser (2.9.2)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rubocop (1.64.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
@@ -71,7 +70,6 @@ GEM
     rubocop-rspec_rails (2.28.3)
       rubocop (~> 1.40)
     ruby-progressbar (1.13.0)
-    strscan (3.1.0)
     syntax_tree (6.2.0)
       prettier_print (>= 1.2.0)
     tzinfo (2.0.6)