Bump GHC version to 9.12

configure.ac

@@ -13,7 +13,7 @@ dnl
 # see what flags are available. (Better yet, read the documentation!)
 #
 
-AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.11], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
+AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.12], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
     # Version on master must be X.Y (not X.Y.Z) for ProjectVersionMunged variable
     # to be useful (cf #19058). However, the version must have three components
     # (X.Y.Z) on stable branches (e.g. ghc-9.2) to ensure that pre-releases are
@@ -22,7 +22,7 @@ AC_INIT([The Glorious Glasgow Haskell Compilation System], [9.11], [glasgow-hask
 AC_CONFIG_MACRO_DIRS([m4])
 
 # Set this to YES for a released version, otherwise NO
-: ${RELEASE=NO}
+: ${RELEASE=YES}
 
 # The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line
 # above.  If this is not a released version, then we will append the

utils/haddock/haddock-api/haddock-api.cabal

@@ -79,7 +79,7 @@ library
 
   -- this package typically supports only single major versions
   build-depends: base             >= 4.16 && < 4.21
-               , ghc             ^>= 9.11
+               , ghc             ^>= 9.12
                , haddock-library ^>= 1.11
                , xhtml           ^>= 3000.2.2
                , parsec          ^>= 3.1.13.0