chore: remove unnecessary redeclarations in for loops (part 2) (#18593)

site/site.go

@@ -849,8 +849,6 @@ func verifyBinSha1IsCurrent(dest string, siteFS fs.FS, shaFiles map[string]strin
 
 	// Verify the hash of each on-disk binary.
 	for file, hash1 := range shaFiles {
-		file := file
-		hash1 := hash1
 		eg.Go(func() error {
 			hash2, err := sha1HashFile(filepath.Join(dest, file))
 			if err != nil {