test(xatu): share lint findings fixture

src/xatu/BUILD

@@ -34,7 +34,6 @@ rust_test(
     data = [
         "testdata/clean.nix",
         "testdata/invalid.nix",
-        "testdata/let_order.nix",
         "testdata/lint_findings.nix",
     ],
     deps = [

src/xatu/testdata/let_order.nix

@@ -1,7 +0,0 @@
-let
-  second = 2;
-  first = 1;
-in {
-  firstField = first;
-  secondField = second;
-}

src/xatu/testdata/lint_findings.nix

@@ -1,5 +1,10 @@
-{
+let
+  second = 2;
+  first = 1;
+in {
   package = package;
   from = pkgs.from;
   url = https://example.com;
+  firstField = first;
+  secondField = second;
 }

src/xatu/xatu_test.rs

@@ -43,7 +43,7 @@ fn xatu_rejects_invalid_source() -> googletest::Result<()> {
 
 #[gtest]
 fn xatu_reports_out_of_order_let_binding() -> googletest::Result<()> {
-    let report = xatu::future_sight(vec![fixture_source("testdata/let_order.nix")?]).or_fail()?;
+    let report = xatu::future_sight(vec![fixture_source("testdata/lint_findings.nix")?]).or_fail()?;
 
     expect_that!(
         report