chore(deps): update dependency system.text.json to v7 [security]

Author: renovate[bot]

scratch-link-mac/scratch-link-mac.csproj

@@ -219,7 +219,7 @@
       <Version>1.0.1</Version>
     </PackageReference>
     <PackageReference Include="System.Text.Json">
-      <Version>6.0.7</Version>
+      <Version>7.0.0</Version>
     </PackageReference>
     <PackageReference Include="System.Threading.Channels">
       <Version>6.0.0</Version>