Temporarily add allow-newer: rere:base to cabal.project

This addition can be removed once the `rere` has been released for GHC 9.8.

Author: andreasabel

cabal.project

@@ -27,5 +27,9 @@ constraints: these -assoc
 constraints: text >= 2.0
 constraints: time >= 1.12
 
+-- Andreas, 2023-10-20, https://github.com/haskell/cabal/issues/9368
+-- Package 'rere' is the last blocking building with GHC 9.8.1
+allow-newer: rere-0.2:base
+
 program-options
   ghc-options: -fno-ignore-asserts