"Fix" the test case

I can't meaningfully unit test these things like this. I'll explore creating a tarball of a known Gitea configuration and using Docker to test against that. For now, just... kinda keep the test building.

src/api/release_attachment.rs

@@ -106,8 +106,9 @@ mod tests {
             crate::Error::Placeholder=>panic!("Received dummy response from the API function. Finish implementing it, stupid"),
             crate::Error::WrappedReqwestErr(error)=>panic!("Received a reqwest::Error from the API function: {error}"),
             crate::Error::MissingAuthToken=>unreachable!("Missing auth token... in a unit test that already panics without the auth token..."),
-            crate::Error::NoSuchFile => (), // test passes
+            crate::Error::NoSuchFile=>(),
             crate::Error::ApiErrorMessage(api_error)=>panic!("Received an error message from the API: {api_error:?}"),
+            crate::Error::NoSuchRelease => todo!(),
         }
     }