Bump flipper-ui from 1.3.2 to 1.3.4 (#5137)

Bumps [flipper-ui](https://github.com/flippercloud/flipper) from 1.3.2 to 1.3.4.
- [Release notes](https://github.com/flippercloud/flipper/releases)
- [Changelog](https://github.com/flippercloud/flipper/blob/main/Changelog.md)
- [Commits](flippercloud/flipper@v1.3.2...v1.3.4)

---
updated-dependencies:
- dependency-name: flipper-ui
  dependency-version: 1.3.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -278,13 +278,13 @@ GEM
     flipper-active_record (1.3.4)
       activerecord (>= 4.2, < 9)
       flipper (~> 1.3.4)
-    flipper-ui (1.3.2)
+    flipper-ui (1.3.4)
       erubi (>= 1.0.0, < 2.0.0)
-      flipper (~> 1.3.2)
+      flipper (~> 1.3.4)
       rack (>= 1.4, < 4)
       rack-protection (>= 1.5.3, < 5.0.0)
       rack-session (>= 1.0.2, < 3.0.0)
-      sanitize (< 7)
+      sanitize (< 8)
     foreman (0.88.1)
     formatador (1.1.0)
     geocoder (1.8.5)
@@ -622,9 +622,9 @@ GEM
     ruby-progressbar (1.13.0)
     ruby-rc4 (0.1.5)
     ruby2_keywords (0.0.5)
-    sanitize (6.1.3)
+    sanitize (7.0.0)
       crass (~> 1.0.2)
-      nokogiri (>= 1.12.0)
+      nokogiri (>= 1.16.8)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
     sassc (2.4.0)