Update year in copyright string for 2021

Author: dempseyatgithub

BuildSettingExtractor/BuildSettingExtractor-Info.plist

@@ -42,7 +42,7 @@
 	<key>LSMinimumSystemVersion</key>
 	<string>${MACOSX_DEPLOYMENT_TARGET}</string>
 	<key>NSHumanReadableCopyright</key>
-	<string>Copyright © 2014-2020 Tapas Software. All rights reserved.</string>
+	<string>Copyright © 2014-2021 Tapas Software. All rights reserved.</string>
 	<key>NSMainNibFile</key>
 	<string>MainMenu</string>
 	<key>NSPrincipalClass</key>