bug: password with `/` breaks logic for OTP

[txj-xyz]

Currently this password will break the login system with OTP

echo "90#DqHz3:PO(&2fx+mH/MS%@kF8/088790" | ./kc-ssh-pam

kc-ssh-pam/internal/auth/auth.go

Lines 180 to 192 in 7bcf822

	if stdinScanner.Scan() {
	pass := strings.Trim(stdinScanner.Text(), "\x00")
	// Extract the password and OTP from the input string
	if strings.Contains(pass, "/") {
	creds := strings.Split(pass, "/")
	password = creds[0]
	otp = creds[1]
	} else {
	password = pass
	otp = ""
	}
	}

[txj-xyz]

perhaps, code works, will build on monday for testing etc. need to unit test more edge cases

...
lastIndex := strings.LastIndex(pass, "/")
if lastIndex != -1 {
	password = pass[:lastIndex]
	otp = pass[lastIndex+1:]
} else {
	password = pass
	otp = ""
}
....

[txj-xyz]

Eh I'll leave this alone for a proper implementation, but I decided to not use this package due to this flaw