Update for newer GHC and newer nightly snapshot

etc/lts-constraints/cabal.project

@@ -1,6 +1,2 @@
-source-repository-package
-  type: git
-  location: git://github.com/commercialhaskell/pantry.git
-
 packages: ./lts-constraints.cabal
-with-compiler: ghc-8.10.7
+with-compiler: ghc-9.4.7

etc/lts-constraints/src/Main.hs

@@ -29,7 +29,7 @@ data State
 
 main :: IO ()
 main = do
-  map <- snapshotMap <$> loadSnapshot "../../nightly-2012-12-11.yaml"
+  map <- snapshotMap <$> loadSnapshot "../../../stackage-snapshots/nightly/2023/12/15.yaml"
   output <- openFile target WriteMode
   let putLine = liftIO . T.hPutStrLn output
   lines <- T.lines <$> T.readFile src

etc/lts-constraints/stack.yaml

@@ -1,4 +1,4 @@
 resolver:
-  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/18.yaml
+  url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/24.yaml
 packages:
 - .

etc/lts-constraints/stack.yaml.lock

@@ -6,8 +6,8 @@
 packages: []
 snapshots:
 - completed:
-    size: 586296
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/18.yaml
-    sha256: 63539429076b7ebbab6daa7656cfb079393bf644971156dc349d7c0453694ac2
+    sha256: abcc4a65c15c7c2313f1a87f01bfd4d910516e1930b99653eef1d2d006515916
+    size: 640074
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/24.yaml
   original:
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/18.yaml
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/21/24.yaml