Bump loofah from 2.2.3 to 2.19.1

Bumps [loofah](https://github.com/flavorjones/loofah) from 2.2.3 to 2.19.1.
- [Release notes](https://github.com/flavorjones/loofah/releases)
- [Changelog](https://github.com/flavorjones/loofah/blob/main/CHANGELOG.md)
- [Commits](flavorjones/loofah@v2.2.3...v2.19.1)

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

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

Gemfile.lock

@@ -189,14 +189,14 @@ GEM
       shex (~> 0.5)
       sparql (>= 2.2, < 4.0)
       sparql-client (>= 2.1, < 4.0)
-    loofah (2.5.0)
+    loofah (2.19.1)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
     method_source (0.9.2)
     mini_mime (1.0.1)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.8.1)
     minitest (5.14.1)
     multi_json (1.13.1)
     multipart-post (2.0.0)
@@ -205,8 +205,9 @@ GEM
       connection_pool (~> 2.2)
     nio4r (2.3.1)
     noid (0.9.0)
-    nokogiri (1.10.9)
-      mini_portile2 (~> 2.4.0)
+    nokogiri (1.14.1)
+      mini_portile2 (~> 2.8.0)
+      racc (~> 1.4)
     okcomputer (1.18.4)
     parslet (1.8.2)
     public_suffix (3.0.3)
@@ -218,6 +219,7 @@ GEM
       nokogiri (~> 1.6)
       rails (~> 5.0)
       rdf
+    racc (1.6.2)
     rack (2.0.7)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)