i18n: translation updates from weblate

Co-authored-by: Hosted Weblate <hosted@weblate.org>
Co-authored-by: Walter William Beckerleg Bruckman <spayk.99@protonmail.com>
Translate-URL: https://hosted.weblate.org/projects/pop-os/libcosmic/zh_Hans/
Translation: Pop OS/libcosmic

i18n/zh-Hans/libcosmic.ftl

@@ -4,3 +4,23 @@ links = 链接
 developers = 开发者
 designers = 设计师
 translators = 译者
+january = { $year }年1月
+february = { $year }年2月
+march = { $year }年3月
+april = { $year }年4月
+may = { $year }年5月
+june = { $year }年6月
+july = { $year }年7月
+august = { $year }年8月
+september = { $year }年9月
+october = { $year }年10月
+november = { $year }年11月
+december = { $year }年12月
+monday = 周一
+tuesday = 周二
+wednesday = 周三
+thursday = 周四
+friday = 周五
+saturday = 周六
+sunday = 周日
+artists = 艺术家