Update translation from Transifex

Author: m-aciek

library/subprocess.po

@@ -11,7 +11,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Python 3.9\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2021-03-02 05:36+0000\n"
+"POT-Creation-Date: 2021-05-12 06:19+0000\n"
 "PO-Revision-Date: 2017-02-16 23:28+0000\n"
 "Last-Translator: m_aciek <maciej.olko@gmail.com>, 2020\n"
 "Language-Team: Polish (https://www.transifex.com/python-doc/teams/5390/pl/)\n"
@@ -1243,6 +1243,17 @@ msgstr "Uwagi:"
 msgid "Calling the program through the shell is usually not required."
 msgstr ""
 
+msgid ""
+"The :func:`call` return value is encoded differently to that of :func:`os."
+"system`."
+msgstr ""
+
+msgid ""
+"The :func:`os.system` function ignores SIGINT and SIGQUIT signals while the "
+"command is running, but the caller must do this separately when using the :"
+"mod:`subprocess` module."
+msgstr ""
+
 msgid "A more realistic example would look like this::"
 msgstr ""