test(stackable-versioned): Update snapshot tests

Author: Techassi

crates/stackable-versioned-macros/fixtures/inputs/default/convert_with.rs

@@ -5,8 +5,8 @@ struct Foo {
         // This tests two additional things:
         // - that both unquoted and quoted usage works
         // - that the renamed name does get picked up correctly by the conversion function
-        changed(since = "v1", from_type = "u16", from_name = "bar", convert_with = u16_to_u32),
-        changed(since = "v2", from_type = "u32", convert_with = "u32_to_u64")
+        changed(since = "v1", from_type = "u16", from_name = "bar", upgrade_with = u16_to_u32),
+        changed(since = "v2", from_type = "u32", upgrade_with = "u32_to_u64")
     )]
     baz: u64,
 }