PHP 8.2 deprecation warnings in administration script

[elrido]

Steps to reproduce

1. run the bin/administration script under PHP 8.2

What happens

$ administration -h
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 218
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 267
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 267
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 268
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 269
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 270
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 271
PHP Deprecated:  Using ${var} in strings is deprecated, use {$var} instead in /srv/bin/administration on line 275
Usage:
  administration [--delete <paste id> | --empty-dirs | --help | --purge | --statistics]

Options:
  -d, --delete      deletes the requested paste ID
  -e, --empty-dirs  removes empty directories (only if Filesystem storage is
                    configured)
  -h, --help        displays this help message
  -p, --purge       purge all expired pastes
  -s, --statistics  reads all stored pastes and comments and reports statistics

What should happen

$ administration -h
Usage:
  administration [--delete <paste id> | --empty-dirs | --help | --purge | --statistics]

Options:
  -d, --delete      deletes the requested paste ID
  -e, --empty-dirs  removes empty directories (only if Filesystem storage is
                    configured)
  -h, --help        displays this help message
  -p, --purge       purge all expired pastes
  -s, --statistics  reads all stored pastes and comments and reports statistics

Basic information

Server address: N/A

Server OS: Alpine 3.18

Webserver: N/A

Browser: N/A

PrivateBin version: 1.5.1

I can reproduce this issue on https://privatebin.net: No (not yet, will be able to once we publish the container image with php 8.2 - doesn't really bother me, though, will just pollute the logs a little)