Only test with GHC >= 9.6

Author: coot

.github/workflows/haskell.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["8.10", "9.2", "9.4", "9.6", "9.8", "9.10", "9.12"]
+        ghc: ["9.6", "9.8", "9.10", "9.12"]
         os: [ubuntu-latest, macos-latest, windows-latest]
 
     defaults:

io-classes/io-classes.cabal

@@ -38,7 +38,7 @@ category:            Control
 build-type:          Simple
 extra-doc-files:     CHANGELOG.md README.md strict-stm/README.md strict-mvar/README.md
 bug-reports:         https://github.com/input-output-hk/io-sim/issues
-tested-with:         GHC == { 8.10, 9.2, 9.4, 9.6, 9.8, 9.10 }
+tested-with:         GHC == { 9.6, 9.8, 9.10, 9.12 }
 
 source-repository head
   type:     git

io-sim/io-sim.cabal

@@ -19,7 +19,7 @@ category:            Testing
 build-type:          Simple
 extra-doc-files:     CHANGELOG.md README.md
 bug-reports:         https://github.com/input-output-hk/io-sim/issues
-tested-with:         GHC == { 8.10, 9.2, 9.4, 9.6, 9.8, 9.10 }
+tested-with:         GHC == { 9.6, 9.8, 9.10, 9.12 }
 
 flag asserts
   description: Enable assertions