Update min macOS version

README.md

@@ -76,7 +76,7 @@ My other *JW Library* project: [**JWPubLib**](https://github.com/erykjj/jwpublib
 
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 #### Footnotes:
-[^#]: Requirements: Linux, MS Windows 10/11, macOS 12 "Monterey" and newer
+[^#]: Requirements: Linux, MS Windows 10/11, macOS 13 "Ventura" and newer
 [^*]: German needs revision; Chinese and Japanese need to be completed; other languages also welcome: [Weblate](https://hosted.weblate.org/engage/jwlmanager/).
 [^1]: [JW Library](https://www.jw.org/en/online-help/jw-library/) is a registered trademark of *Watch Tower Bible and Tract Society of Pennsylvania*.
 [^2]: See [`/res/requirements.txt`](https://github.com/erykjj/jwlmanager/blob/master/res/requirements.txt).