Upgrade to cabal 2.0

Author: mniip

generic-arbitrary.cabal

@@ -16,7 +16,7 @@ category: Generic
 build-type: Simple
 extra-source-files: CHANGELOG.md
  , README.md
-cabal-version: 1.22
+cabal-version: 2.0
 tested-with: GHC == 8.6.5
  , GHC == 8.10.7
  , GHC == 9.0.2
@@ -94,7 +94,7 @@ test-suite test
  , TypeSynonymInstances
  , UndecidableInstances
  , ViewPatterns
- build-tools: tasty-discover
+ build-tool-depends: tasty-discover:tasty-discover
  ghc-options: -Wall
  -threaded
  -rtsopts