fix: reproducible tarballs on windows (#2293)

## Description

Small change to do a `filepath.ToSlash` on paths within tarballs to make
cross platform packages happy.

## Type of change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Other (security config, docs update, etc)

## Checklist before merging

- [x] Test, docs, adr added or updated as needed
- [x] [Contributor Guide
Steps](https://github.com/defenseunicorns/zarf/blob/main/CONTRIBUTING.md#developer-workflow)
followed

---------

Signed-off-by: razzle <[email protected]>

src/pkg/cluster/injector.go

@@ -436,8 +436,6 @@ func (c *Cluster) getImagesAndNodesForInjection(timeoutDuration time.Duration) (
 	result := make(imageNodeMap)
 
 	for {
-		// Delay check 2 seconds
-		time.Sleep(2 * time.Second)
 		select {
 
 		// On timeout abort
@@ -493,6 +491,7 @@ func (c *Cluster) getImagesAndNodesForInjection(timeoutDuration time.Duration) (
 
 		if len(result) < 1 {
 			c.Log("no images found: %w")
+			time.Sleep(2 * time.Second)
 		} else {
 			return result, nil
 		}

src/pkg/utils/io.go

@@ -611,7 +611,9 @@ func CreateReproducibleTarballFromDir(dirPath, dirPrefix, tarballPath string) er
 		if err != nil {
 			return fmt.Errorf("error getting relative path: %w", err)
 		}
-		header.Name = filepath.Join(dirPrefix, name)
+		name = filepath.Join(dirPrefix, name)
+		name = filepath.ToSlash(name)
+		header.Name = name
 
 		// Write the header to the tarball
 		if err := tw.WriteHeader(header); err != nil {