Bump nokogiri from 1.13.3 to 1.13.6

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.13.3 to 1.13.6.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.13.3...v1.13.6)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: direct:production
...

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

Gemfile

@@ -30,7 +30,7 @@ gem "decidim", DECIDIM_VERSION
 
 # Remove this nokogiri forces version at any time but make sure that no __truncato_root__ text appears in the cards in general.
 # More exactly in comments in the homepage and in processes cards in the processes listing
-gem "nokogiri", "= 1.13.3"
+gem "nokogiri", "1.13.6"
 
 group :development, :test do
   gem "better_errors", ">= 2.3.0"

Gemfile.lock

@@ -576,7 +576,7 @@ GEM
     netrc (0.11.0)
     nio4r (2.5.8)
     nobspw (0.6.2)
-    nokogiri (1.13.3-x86_64-linux)
+    nokogiri (1.13.6-x86_64-linux)
       racc (~> 1.4)
     nokogumbo (2.0.5)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -893,7 +893,7 @@ DEPENDENCIES
   figaro (>= 1.1.1)
   letter_opener_web
   listen (~> 3.1.0)
-  nokogiri (= 1.13.3)
+  nokogiri (= 1.13.6)
   openssl
   puma
   sanitize (~> 5.2)