Move templated test file to separate directory below fixtures to avoid interference with existing tests

Co-authored-by: fgreinacher <[email protected]>

Author: Copilot

test/fixtures/files/upload_v1.0.0.txt renamed to test/fixtures/files/versioned/upload_v1.0.0.txt

@@ -723,7 +723,7 @@ test.serial("Publish a release with templated wildcard path", async (t) => {
   const encodedProjectPath = encodeURIComponent(`${owner}/${repo}`);
   const encodedGitTag = encodeURIComponent(nextRelease.gitTag);
 
-  const assets = ["upload_v${nextRelease.version}.txt"];
+  const assets = ["versioned/upload_v${nextRelease.version}.txt"];
 
   const uploaded = {
     url: "/uploads/upload_v1.0.0.txt",