Bump ubuntu image to 22.04

Motivated by https://github.com/actions/runner-images/issues/6399. wasm32 CI expects to use the ubuntu image to build the bindists, which should work out of the box on ubuntu-latest GitHub workflows.

images/debian.dhall

@@ -15,7 +15,7 @@ let
 let
   Image = ../Image.dhall
 
-let 
+let
   docker_base_url: Text = "registry.gitlab.haskell.org/ghc/ci-images"
 
 let
@@ -141,7 +141,7 @@ let
             merge { Some = \(_: Llvm.Source) -> [ "LLC=${bootLlvmDir}/bin/llc", "OPT=${bootLlvmDir}/bin/opt" ]
                   , None = [] : List Text
                   } opts.bootstrapLlvm
-            
+
         let
           image =
             CF.from opts.fromImage
@@ -319,8 +319,8 @@ let debian9Images: List Image.Type =
 
 let ubuntuImages: List Image.Type =
 [ DebianImage.toDocker DebianImage::
-    { name = "x86_64-linux-ubuntu20_04"
-    , fromImage = "amd64/ubuntu:20.04"
+    { name = "x86_64-linux-ubuntu22_04"
+    , fromImage = "amd64/ubuntu:22.04"
     , runnerTags = [ "x86_64-linux" ]
     , bootstrapLlvm = None Llvm.Source
     , bootstrapGhc = { version = "9.2.2", triple = "x86_64-deb9-linux" }