build(deps-dev): bump nokogiri from 1.18.9 to 1.19.1 in /docs (#662)

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.18.9
to 1.19.1.

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/Gemfile.lock

@@ -240,24 +240,24 @@ GEM
     minitest (5.25.1)
     net-http (0.9.1)
       uri (>= 0.11.1)
-    nokogiri (1.18.9)
+    nokogiri (1.19.1)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.18.9-aarch64-linux-gnu)
+    nokogiri (1.19.1-aarch64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.9-aarch64-linux-musl)
+    nokogiri (1.19.1-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.9-arm-linux-gnu)
+    nokogiri (1.19.1-arm-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.9-arm-linux-musl)
+    nokogiri (1.19.1-arm-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.9-arm64-darwin)
+    nokogiri (1.19.1-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.9-x86_64-darwin)
+    nokogiri (1.19.1-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.9-x86_64-linux-gnu)
+    nokogiri (1.19.1-x86_64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.9-x86_64-linux-musl)
+    nokogiri (1.19.1-x86_64-linux-musl)
       racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)