refactor: use errors.AsType (#510)

Replaces use of `errors.As` with `errors.AsType`, a generic function introduced in Go 1.26 that unwraps errors in a type-safe way and returns a typed result directly.

Instead of declaring a separate variable and passing a pointer to it, `errors.AsType` returns a typed result directly. This makes the code shorter, easier to read, and avoids common mistakes related to incorrect pointer usage.

Signed-off-by: Ryan Johnson <ryan@tenthirtyam.org>

Author: tenthirtyam

builder/vmware/common/driver.go

@@ -380,8 +380,7 @@ func runAndLog(cmd *exec.Cmd) (string, string, error) {
 	stdoutString := strings.TrimSpace(stdout.String())
 	stderrString := strings.TrimSpace(stderr.String())
 
-	var exitError *exec.ExitError
-	if errors.As(err, &exitError) {
+	if _, ok := errors.AsType[*exec.ExitError](err); ok {
 		message := stderrString
 		if message == "" {
 			message = stdoutString