Bump GHC on i386 build

Author: hasufell

.github/workflows/release.yaml

@@ -32,7 +32,7 @@ jobs:
         include:
           - os: ubuntu-latest
             ARTIFACT: "i386-linux-ghcup"
-            GHC_VER: 8.10.7
+            GHC_VER: 9.6.7
             ARCH: 32
           - os: ubuntu-latest
             ARTIFACT: "x86_64-linux-ghcup"