Merge pull request #1520 from adafruit/dependabot/bundler/rexml-3.3.9

Bump rexml from 3.3.6 to 3.3.9

Author: dhalbert

Gemfile.lock

@@ -72,8 +72,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rouge (4.1.0)
     ruby-vips (2.1.4)
       ffi (~> 1.12)
@@ -83,7 +82,6 @@ GEM
       rake (>= 13.0.0)
     sass-embedded (1.75.0-x86_64-linux-gnu)
       google-protobuf (>= 3.25, < 5.0)
-    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     unicode-display_width (2.4.2)