Update rexml to 3.4.4 - security patch (#593)

* Update Bundler to 2.4.22 for Ruby 3.1+ compatibility

- Conservative update from Bundler 1.17.2 to 2.4.22
- Fixes `NoMethodError: undefined method 'untaint'` with newer Ruby versions
- Tested with Ruby 3.3.7, compatible with Ruby 3.1+

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

* Update Bundler to 2.4.22 and rexml to 3.4.4

- Conservative Bundler update from 1.17.2 to 2.4.22 for Ruby 3.1+ compatibility
- Update rexml from 3.3.9 to 3.4.4 to latest version
- Fixes `NoMethodError: undefined method 'untaint'` with newer Ruby versions

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

* Update rexml to 3.4.4

- Update rexml from 3.3.9 to 3.4.4 to latest version
- Maintains existing Bundler version 1.17.2

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

---------

Co-authored-by: Claude <[email protected]>

Author: ryanwi

packages/react-native/examples/VanillaCalling/Gemfile.lock

@@ -76,7 +76,7 @@ GEM
     netrc (0.11.0)
     nkf (0.2.0)
     public_suffix (4.0.7)
-    rexml (3.3.9)
+    rexml (3.4.4)
     ruby-macho (2.5.1)
     typhoeus (1.4.1)
       ethon (>= 0.9.0)