chore(l10n): update languages/pressbooks-book.pot

Author: SteelWagstaff

languages/pressbooks-book.pot

@@ -2,14 +2,14 @@
 # This file is distributed under the GPL v3.0 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: McLuhan 2.20.0\n"
+"Project-Id-Version: McLuhan 2.21.0\n"
 "Report-Msgid-Bugs-To: https://github.com/pressbooks/pressbooks-book/issues\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <[email protected]>\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"POT-Creation-Date: 2022-09-01T14:15:19+00:00\n"
+"POT-Creation-Date: 2022-09-12T23:17:33+00:00\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "X-Generator: WP-CLI 2.6.0\n"
 "X-Domain: pressbooks-book\n"