chore(deps/e2e-latest-ruby): bump rexml in /examples/E2E-latest

Bumps [rexml](https://github.com/ruby/rexml) from 3.3.3 to 3.4.2.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.3.3...v3.4.2)

---
updated-dependencies:
- dependency-name: rexml
  dependency-version: 3.4.2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

examples/E2E-latest/Gemfile.lock

@@ -71,10 +71,8 @@ GEM
     nap (1.1.0)
     netrc (0.11.0)
     public_suffix (4.0.7)
-    rexml (3.3.3)
-      strscan
+    rexml (3.4.2)
     ruby-macho (2.5.1)
-    strscan (3.1.0)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
     tzinfo (2.0.6)