Merge pull request #1624 from scala/dependabot/bundler/html-proofer-3.15.1

Bump html-proofer from 3.15.0 to 3.15.1

Author: Philippus

Gemfile.lock

@@ -11,9 +11,9 @@ GEM
     ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
-    ffi (1.11.3)
+    ffi (1.12.1)
     forwardable-extended (2.6.0)
-    html-proofer (3.15.0)
+    html-proofer (3.15.1)
       addressable (~> 2.3)
       mercenary (~> 0.3)
       nokogumbo (~> 2.0)
@@ -60,7 +60,7 @@ GEM
     parallel (1.19.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
-    public_suffix (4.0.1)
+    public_suffix (4.0.3)
     rainbow (3.0.0)
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
@@ -75,7 +75,7 @@ GEM
       rb-inotify (~> 0.9, >= 0.9.7)
     typhoeus (1.3.1)
       ethon (>= 0.9.0)
-    yell (2.2.0)
+    yell (2.2.1)
 
 PLATFORMS
   ruby