Bump govuk_publishing_components from 21.65.1 to 21.66.1

Bumps [govuk_publishing_components](https://github.com/alphagov/govuk_publishing_components) from 21.65.1 to 21.66.1.
- [Release notes](https://github.com/alphagov/govuk_publishing_components/releases)
- [Changelog](https://github.com/alphagov/govuk_publishing_components/blob/master/CHANGELOG.md)
- [Commits](alphagov/govuk_publishing_components@v21.65.1...v21.66.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -115,7 +115,7 @@ GEM
       sentry-raven (>= 2.7.1, < 3.1.0)
       statsd-ruby (~> 1.4.0)
       unicorn (>= 5.4, < 5.7)
-    govuk_publishing_components (21.65.1)
+    govuk_publishing_components (21.66.1)
       govuk_app_config
       kramdown
       plek
@@ -185,7 +185,7 @@ GEM
     mocha (1.11.2)
     multipart-post (2.1.1)
     netrc (0.11.0)
-    nio4r (2.5.3)
+    nio4r (2.5.4)
     nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     null_logger (0.0.1)