CI: Add ghc-9.6.2 to the build matrix

Author: erikd

.github/workflows/github-page.yml

@@ -22,7 +22,7 @@ jobs:
 
     env:
       # Modify this value to "invalidate" the cabal cache.
-      CABAL_CACHE_VERSION: "2023-07-11"
+      CABAL_CACHE_VERSION: "2023-07-27"
 
       # Modify this value to "invalidate" the secp cache.
       SECP_CACHE_VERSION: "2022-12-30"

.github/workflows/haskell-linux.yml

@@ -31,7 +31,7 @@ jobs:
 
     env:
       # Modify this value to "invalidate" the cabal cache.
-      CABAL_CACHE_VERSION: "2023-07-11"
+      CABAL_CACHE_VERSION: "2023-07-27"
 
       # Modify this value to "invalidate" the secp cache.
       SECP_CACHE_VERSION: "2022-12-30"

.github/workflows/haskell.yml

@@ -25,13 +25,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ghc: ["9.2.7"]
+        ghc: ["9.2.7", "9.6.2"]
         cabal: ["3.10.1.0"]
         os: [macos-latest, windows-latest]
 
     env:
       # Modify this value to "invalidate" the cabal cache.
-      CABAL_CACHE_VERSION: "2023-07-11"
+      CABAL_CACHE_VERSION: "2023-07-27"
 
       # Modify this value to "invalidate" the secp cache.
       SECP_CACHE_VERSION: "2022-12-30"

.github/workflows/stylish-haskell.yml

@@ -27,7 +27,7 @@ jobs:
 
     env:
       # Modify this value to "invalidate" the cabal cache.
-      CABAL_CACHE_VERSION: "2023-07-11"
+      CABAL_CACHE_VERSION: "2023-07-27"
 
       STYLISH_HASKELL_VERSION: "0.14.4.0"