Bump index state and ghcide version

ci/config.cabal.project

@@ -3,7 +3,7 @@
 -- ghc/ghc#23048.
 
 index-state:
-    hackage.haskell.org 2024-04-03T11:41:05Z,
+    hackage.haskell.org 2024-06-19T09:26:35Z,
     head.hackage HEAD
 
 constraints: th-abstraction >= 0.4

ci/config.sh

@@ -151,7 +151,7 @@ extra_package futhark 0.25.13
 extra_package generic-random 1.5.0.1
 extra_package lame 0.2.2
 extra_package inspection-testing 0.5.0.3
-extra_package ghcide 2.6.0.0
+extra_package ghcide 2.9.0.0
 extra_package ghc-typelits-extra 0.4.6
 
 # This package is affected by https://gitlab.haskell.org/ghc/ghc/-/issues/22912