[haskell-http-client] Update haskell-http-client generator to Aeson 2.x (#12309)

* Update haskell-http-client generator to Aeson 2.x

Co-authored-by: Andrea Cognolato <andrecogno@hotmail.it>

samples/client/petstore/haskell-http-client/tests-integration/package.yaml

@@ -19,7 +19,7 @@ dependencies:
 - mtl >=2.2.1
 - unordered-containers
 - containers >=0.5.0.0 && <0.7
-- aeson >=1.0 && <2.0
+- aeson >=2.0 && <3.0
 - bytestring >=0.10.0
 - http-types >=0.8 && <0.13
 - http-client >=0.5 && <0.8

samples/client/petstore/haskell-http-client/tests-integration/stack.yaml

@@ -1,2 +1,2 @@
-resolver: lts-18.10
+resolver: lts-19.6
 extra-deps: [ '..' ]

samples/client/petstore/haskell-http-client/tests-integration/stack.yaml.lock

@@ -6,7 +6,7 @@
 packages: []
 snapshots:
 - completed:
-    size: 587546
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/18/10.yaml
-    sha256: 88b4f81e162ba3adc230a9fcccc4d19ac116377656bab56c7382ca88598b257a
-  original: lts-18.10
+    size: 618876
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/19/6.yaml
+    sha256: fb634b19f31da06684bb07ce02a20c75a3162138f279b388905b03ebd57bb50f
+  original: lts-19.6