Bump simple_form from 4.0.0 to 4.0.1 (#8814)

Bumps [simple_form](https://github.com/plataformatec/simple_form) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/plataformatec/simple_form/releases)
- [Changelog](https://github.com/plataformatec/simple_form/blob/master/CHANGELOG.md)
- [Commits](https://github.com/plataformatec/simple_form/compare/v4.0.0...v4.0.1)

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

Gemfile.lock

@@ -562,9 +562,9 @@ GEM
       thor (~> 0)
     simple-navigation (4.0.5)
       activesupport (>= 2.3.2)
-    simple_form (4.0.0)
-      actionpack (> 4)
-      activemodel (> 4)
+    simple_form (4.0.1)
+      actionpack (>= 5.0)
+      activemodel (>= 5.0)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)