fix(windows): create unique installer

src/go.mod

@@ -10,7 +10,7 @@ require (
 	github.com/alecthomas/repr v0.4.0 // indirect
 	github.com/esimov/stackblur-go v1.1.0
 	github.com/fogleman/gg v1.3.0
-	github.com/google/uuid v1.6.0 // indirect
+	github.com/google/uuid v1.6.0
 	github.com/gookit/color v1.5.4
 	github.com/huandu/xstrings v1.5.0 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect

src/upgrade/cli_windows.go

@@ -8,6 +8,8 @@ import (
 	"os/exec"
 	"path/filepath"
 	"runtime"
+
+	"github.com/google/uuid"
 )
 
 var successMsg = "Oh My Posh is installing in the background.\nRestart your shell in a minute to take full advantage of the new functionality."
@@ -20,14 +22,9 @@ func install() error {
 		return errors.New("failed to get TEMP environment variable")
 	}
 
-	path := filepath.Join(temp, "install.exe")
-
-	if _, err := os.Stat(path); err == nil {
-		err := os.Remove(path)
-		if err != nil {
-			return errors.New("unable to remove existing installer")
-		}
-	}
+	id := uuid.New().String()
+	fileName := fmt.Sprintf("oh-my-posh-install-%s.exe", id)
+	path := filepath.Join(temp, fileName)
 
 	file, err := os.Create(path)
 	if err != nil {