Debian에서 PHP를 7.4.6에서 7.4.12로 업그레이드하는 데 문제가 있습니다.

Debian에서 PHP 7.4.6을 실행하고 있으며 7.4.12로 업그레이드하고 싶습니다. 이 명령을 실행합니다.

sudo apt-get --only-upgrade install php7.4

알겠어요

Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package php7.4
E: Couldn't find any package by glob 'php7.4'
E: Couldn't find any package by regex 'php7.4'

그래서 나는 이것을 시도했다

sudo apt-add-repository ppa:ondrej/php

다음 후에 이 명령을 실행하도록 계획하세요.

sudo apt-get update
sudo apt-get install php7.4

하지만 일단 실행 sudo apt-add-repository ppa:ondrej/php하고 Enter 키를 누르면

  Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.7/threading.py", line 917, in _bootstrap_inner
  self.run()
File "/usr/lib/python3.7/threading.py", line 865, in run
  self._target(*self._args, **self._kwargs)
File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 688, in addkey_func
  func(**kwargs)
File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 386, in add_key
  return apsk.add_ppa_signing_key()
File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 252, in add_ppa_signing_key
  tmp_keyring, tmp_secret_keyring, signing_key_fingerprint, tmp_keyring_dir):
File "/usr/lib/python3/dist-packages/softwareproperties/ppa.py", line 181, in _recv_key
  "--recv", signing_key_fingerprint,
File "/usr/lib/python3.7/subprocess.py", line 323, in call
  with Popen(*popenargs, **kwargs) as p:
File "/usr/lib/python3.7/subprocess.py", line 775, in __init__
  restore_signals, start_new_session)
File "/usr/lib/python3.7/subprocess.py", line 1522, in _execute_child
  raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'gpg': 'gpg'

Debian 10에서 PHP 7.4.6을 7.4.12로 업그레이드하기 위해 이 문제를 해결하는 방법은 무엇입니까?