finalize 1.9.3

dist/linux/common/org.cryptomator.Cryptomator.metainfo.xml

@@ -66,6 +66,7 @@
 	</content_rating>
 
 	<releases>
+		<release date="2023-08-07" version="1.9.3"/>
 		<release date="2023-07-24" version="1.9.2"/>
 		<release date="2023-06-07" version="1.9.1"/>
 		<release date="2023-05-30" version="1.9.0"/>