[Security] Bump loofah from 2.2.2 to 2.2.3

Bumps [loofah](https://github.com/flavorjones/loofah) from 2.2.2 to 2.2.3. **This update includes security fixes.**
- [Release notes](https://github.com/flavorjones/loofah/releases)
- [Changelog](https://github.com/flavorjones/loofah/blob/master/CHANGELOG.md)
- [Commits](flavorjones/loofah@v2.2.2...v2.2.3)

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

Gemfile.lock

@@ -93,16 +93,16 @@ GEM
     io-like (0.3.0)
     json (2.1.0)
     kgio (2.11.2)
-    loofah (2.2.2)
+    loofah (2.2.3)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
     mini_mime (1.0.0)
-    mini_portile2 (2.3.0)
+    mini_portile2 (2.4.0)
     minitest (5.11.3)
-    nokogiri (1.8.2)
-      mini_portile2 (~> 2.3.0)
+    nokogiri (1.10.1)
+      mini_portile2 (~> 2.4.0)
     parallel (1.12.1)
     parser (2.5.1.0)
       ast (~> 2.4.0)