Fix for new octokit

src/main.ts

@@ -51,7 +51,6 @@ async function upload_to_release(
     core.debug(`Skipping ${file}, since its not a file`)
     return
   }
-  const file_size = stat.size
   const file_bytes = fs.readFileSync(file)
 
   // Check for duplicates.
@@ -81,13 +80,9 @@ async function upload_to_release(
 
   core.debug(`Uploading ${file} to ${asset_name} in release ${tag}.`)
   await octokit.repos.uploadReleaseAsset({
-    url: release.data.upload_url,
-    name: asset_name,
-    file: file_bytes,
-    headers: {
-      'content-type': 'binary/octet-stream',
-      'content-length': file_size
-    }
+    ...github.context.repo,
+    release_id: release.data.id,
+    data: file_bytes
   })
 }