Update dependency discard to v2 (#39192)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile

@@ -45,7 +45,7 @@ gem 'omniauth-saml', '~> 2.0'
 
 gem 'color_diff', '~> 0.1'
 gem 'csv', '~> 3.2'
-gem 'discard', '~> 1.2'
+gem 'discard', '~> 2.0'
 gem 'doorkeeper', '~> 5.6'
 gem 'faraday-httpclient'
 gem 'fast_blank', '~> 1.0'

Gemfile.lock

@@ -205,8 +205,8 @@ GEM
       devise (>= 4.0.0)
       rpam2 (~> 4.0)
     diff-lcs (1.6.2)
-    discard (1.4.0)
-      activerecord (>= 4.2, < 9.0)
+    discard (2.0.0)
+      activerecord (>= 7.0, < 9.0)
     docile (1.4.1)
     domain_name (0.6.20240107)
     doorkeeper (5.9.0)
@@ -970,7 +970,7 @@ DEPENDENCIES
   devise
   devise-two-factor
   devise_pam_authenticatable2 (~> 9.2)
-  discard (~> 1.2)
+  discard (~> 2.0)
   doorkeeper (~> 5.6)
   dotenv
   fabrication