test: fix acceptance tests

examples/acceptance_tests/script_context/validators/basic.ak

@@ -1,4 +1,3 @@
-use aiken/list
 use aiken/option
 use aiken/transaction.{NoDatum, ScriptContext, Spend, TransactionId}
 use aiken/transaction/credential.{VerificationKeyCredential}
@@ -6,13 +5,12 @@ use aiken/transaction/value
 
 validator {
   fn spend(_datum: Void, _redeemer: Void, ctx: ScriptContext) {
-    [
+    and {
       assert_id(ctx.transaction),
       assert_purpose(ctx.purpose),
       assert_outputs(ctx.transaction),
       assert_fee(ctx.transaction),
-    ]
-      |> list.and
+    }
   }
 }
 
@@ -39,7 +37,7 @@ fn assert_fee(transaction) {
 fn assert_outputs(transaction) {
   when transaction.outputs is {
     [output] ->
-      [
+      and {
         output.value == value.from_lovelace(1000000000),
         output.address.payment_credential == VerificationKeyCredential(
           #"11111111111111111111111111111111111111111111111111111111",
@@ -47,8 +45,7 @@ fn assert_outputs(transaction) {
         option.is_none(output.address.stake_credential),
         output.datum == NoDatum,
         output.reference_script == None,
-      ]
-        |> list.and
+      }
     _ -> fail @"unexpected number of outputs"
   }
 }