Bump rexml from 3.2.8 to 3.3.2

Bumps [rexml](https://github.com/ruby/rexml) from 3.2.8 to 3.3.2.
- [Release notes](https://github.com/ruby/rexml/releases)
- [Changelog](https://github.com/ruby/rexml/blob/master/NEWS.md)
- [Commits](ruby/rexml@v3.2.8...v3.3.2)

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

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

Gemfile.lock

@@ -370,8 +370,6 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.4.0)
     nested_form (0.3.2)
-    net-http (0.4.1)
-      uri
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
     net-imap (0.4.14)
@@ -581,8 +579,8 @@ GEM
       netrc (~> 0.8)
     reverse_markdown (2.1.1)
       nokogiri
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
+    rexml (3.3.2)
+      strscan
     rouge (4.1.3)
     rsolr (2.5.0)
       builder (>= 2.1.2)
@@ -736,7 +734,6 @@ GEM
     unf_ext (0.0.8.2)
     unicode-display_width (2.4.2)
     unicode-types (1.9.0)
-    uri (0.13.0)
     validate_email (0.1.6)
       activemodel (>= 3.0)
       mail (>= 2.2.5)