Add Helm repository update command in UpgradeCommand function

- Introduced a command to update Helm repositories before performing the upgrade, enhancing the upgrade process by ensuring the latest charts are available.
- Added error handling to notify users of any issues during the repository update.

Author: gmD3v

command_upgrade/main.go

@@ -2,6 +2,7 @@ package commandupgrade
 
 import (
 	"os"
+	"os/exec"
 
 	"github.com/Netsocs-Team/netsocs-manager-cli/utils"
 	"github.com/pterm/pterm"
@@ -17,6 +18,14 @@ func UpgradeCommand(cmd *cobra.Command, args []string) {
 		pterm.Info.Println("Upgrading to the latest version available")
 	}
 
+	cmdResult := exec.Command("helm", "repo", "update")
+	cmdResult.Stdout = os.Stdout
+	cmdResult.Stderr = os.Stderr
+	if err := cmdResult.Run(); err != nil {
+		pterm.Error.Printfln("Error updating Helm repositories: %v", err)
+		os.Exit(1)
+	}
+
 	if err := utils.RunHelmUpgradeWithVersion(version); err != nil {
 		pterm.Error.Printfln("Error upgrading application: %v", err)
 		os.Exit(1)