Update dependency html-proofer to v5.2.1

Author: renovate[bot]

Gemfile.lock

@@ -2,10 +2,10 @@ GEM
   remote: https://rubygems.org/
   specs:
     Ascii85 (2.0.1)
-    addressable (2.8.9)
+    addressable (2.8.10)
       public_suffix (>= 2.0.2, < 8.0)
     afm (0.2.2)
-    async (2.38.0)
+    async (2.38.1)
       console (~> 1.29)
       fiber-annotation
       io-event (~> 1.11)
@@ -34,7 +34,7 @@ GEM
       logger
     faraday-net_http (3.4.2)
       net-http (~> 0.5)
-    ffi (1.17.3-x86_64-linux-gnu)
+    ffi (1.17.4-x86_64-linux-gnu)
     fiber-annotation (0.2.0)
     fiber-local (1.1.0)
       fiber-storage
@@ -44,7 +44,7 @@ GEM
       bigdecimal
       rake (~> 13.3)
     hashery (2.1.2)
-    html-proofer (5.2.0)
+    html-proofer (5.2.1)
       addressable (~> 2.3)
       async (~> 2.1)
       benchmark (~> 0.5)
@@ -57,7 +57,7 @@ GEM
     http_parser.rb (0.8.1)
     i18n (1.14.8)
       concurrent-ruby (~> 1.0)
-    io-event (1.14.4)
+    io-event (1.14.5)
     jekyll (4.4.1)
       addressable (~> 2.4)
       base64 (~> 0.2)
@@ -92,7 +92,7 @@ GEM
       jekyll (>= 3.7, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    json (2.19.1)
+    json (2.19.5)
     kramdown (2.5.2)
       rexml (>= 3.4.4)
     kramdown-parser-gfm (1.1.0)
@@ -118,7 +118,7 @@ GEM
       jekyll-sitemap (~> 1.3)
     net-http (0.9.1)
       uri (>= 0.11.1)
-    nokogiri (1.19.1-x86_64-linux-gnu)
+    nokogiri (1.19.3-x86_64-linux-gnu)
       racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)