Switch to GHC 9.12.2

Signed-off-by: Mihai Maruseac <[email protected]>

Author: mihaimaruseac

build-constraints.yaml

@@ -1,7 +1,7 @@
 ghc-major-version: "9.12"
 
 # new curator is supposed to use exact GHC version
-ghc-version: "9.12.1"
+ghc-version: "9.12.2"
 
 # This affects which version of the Cabal file format we allow. We
 # should ensure that this is always no greater than the version