Modify contacts.app to print christmas labels - resign required....

Hi! I'm not a developer but hope someone can help me...

I've regularly updated the standard contacts app to include a file called ABRelatedNamesConfig.plist in Resources. This file just has the contents below. By including this, it meant that the Contacts.app was able to print address labels including spouse and children such as: "Mr John and Jane Smith and Kenny, Jill and Bertie" which was great for Christmas cards.... This feature was standard but got removed in MacOS a few versions ago but the code still worked when you put the file back into a Contacts.app copy (renamed). HOWEVER with Ventura it won't play ball now because the app needs resigning. Can anyone tell me how I can sign the app again (I guess as myself rather than Apple?). Thanks if you can help... I've tried code sign and changing terminal to be able to do app management and/or full disk access but that didn't seem to work and I don't really know what I'm doing... I know Google is my friend... but...

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>ca</key>
<true/>
<key>gb</key>
<true/>
<key>us</key>
<true/>
<key>fr</key>
<true/>
<key>no</key>
<true/>
<key>au</key>
<true/>
<key>de</key>
<true/>
<key>ch</key>
<true/>
</dict>
</plist>
Modify contacts.app to print christmas labels - resign required....
 
 
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