Bump pundit from 1.1.0 to 2.0.0 (#8873)

Bumps [pundit](https://github.com/varvet/pundit) from 1.1.0 to 2.0.0.
- [Release notes](https://github.com/varvet/pundit/releases)
- [Changelog](https://github.com/varvet/pundit/blob/master/CHANGELOG.md)
- [Commits](https://github.com/varvet/pundit/compare/v1.1.0...v2.0.0)

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

Gemfile.lock

@@ -415,7 +415,7 @@ GEM
       pry (>= 0.10.4)
     public_suffix (3.0.3)
     puma (3.12.0)
-    pundit (1.1.0)
+    pundit (2.0.0)
       activesupport (>= 3.0.0)
     raabro (1.1.6)
     rack (2.0.5)
@@ -724,7 +724,7 @@ DEPENDENCIES
   pry-byebug (~> 3.6)
   pry-rails (~> 0.3)
   puma (~> 3.12)
-  pundit (~> 1.1)
+  pundit (~> 2.0)
   rack-attack (~> 5.4)
   rack-cors (~> 1.0)
   rails (~> 5.2.1)