Bump nokogiri from 1.12.5 to 1.13.4

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.12.5 to 1.13.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.13.4/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.12.5...v1.13.4)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -299,7 +299,7 @@ GEM
       rails (> 5.2)
     mini_magick (4.11.0)
     mini_mime (1.1.2)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.8.0)
     minitest (5.14.4)
     mods (2.4.1)
       edtf
@@ -317,8 +317,8 @@ GEM
     noid-rails (3.0.3)
       actionpack (>= 5.0.0, < 7)
       noid (~> 0.9)
-    nokogiri (1.12.5)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     nom-xml (1.1.0)
       activesupport (>= 3.2.18)
@@ -349,7 +349,7 @@ GEM
     public_suffix (4.0.6)
     puma (5.5.2)
       nio4r (~> 2.0)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
     rack-proxy (0.7.0)
       rack