Bump workflow version to 5.0

Author: xilopaint

src/info.plist

@@ -2370,7 +2370,7 @@ The workflow can be used through the following [file actions](https://www.alfred
 		</dict>
 	</array>
 	<key>version</key>
-	<string>4.9</string>
+	<string>5.0</string>
 	<key>webaddress</key>
 	<string>https://github.com/xilopaint/alfred-pdf-tools</string>
 </dict>