Bump rexml from 3.4.1 to 3.4.2 in /documentation (#61)

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

Author: dependabot[bot]

documentation/Gemfile.lock

@@ -90,7 +90,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.4.1)
+    rexml (3.4.2)
     rouge (3.30.0)
     safe_yaml (1.0.5)
     sass-embedded (1.86.3-aarch64-linux-gnu)