Added Zero Install - .NET Core version 2.25.3

<?xml version="1.0" encoding="utf-8"?>
<interface xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://zero-install.sourceforge.net/2004/injector/interface https://docs.0install.net/specifications/feed.xsd http://0install.de/schema/desktop-integration/capabilities https://docs.0install.net/specifications/capabilities.xsd" xmlns="http://zero-install.sourceforge.net/2004/injector/interface">
  <name>Zero Install - .NET Core version</name>
  <summary xml:lang="en">.NET Core version of 0install, the decentralized installation system</summary>
  <description xml:lang="en">This is the .NET Core version of Zero Install. Zero Install is a cross-platform, decentralized installation system. Instead of having a central repository in which all software is placed under a naming scheme managed by some central authority, programs and libraries in Zero Install are identified by URIs. Anyone who can create a web-page can publish software. Anyone can install software (not just administrators).</description>
  <needs-terminal />
  <feed-for interface="https://apps.0install.net/0install/0install-dotnet.xml" />
  <group license="LGPL v3 (GNU Lesser General Public License)">
    <command name="run" path="0install.dll">
      <runner interface="https://apps.0install.net/dotnet/runtime.xml" version="6.0..!6.1" />
    </command>
    <implementation version="2.25.3" released="2023-11-25" id="sha256new_JD4R37MXY65U62QOQVNBPZW4OZ3SVUZ5KDOLTFVAAVJC6V7TEMHQ">
      <manifest-digest sha256new="JD4R37MXY65U62QOQVNBPZW4OZ3SVUZ5KDOLTFVAAVJC6V7TEMHQ" />
      <archive href="0install-dotnet-2.25.3.tar.gz" size="13719343" type="application/x-compressed-tar" />
    </implementation>
  </group>
</interface>

0install/0install-dotnet.xml

@@ -250,5 +250,9 @@
       <manifest-digest sha256new="PYU6YRV4NQVPB77IFMD3EJF3TAA53BR332XRQKPZV4NNDGGWLWOA"/>
       <archive href="0install-dotnet-2.25.2.tar.gz" size="13384405" type="application/x-compressed-tar"/>
     </implementation>
+    <implementation version="2.25.3" released="2023-11-25" id="sha256new_JD4R37MXY65U62QOQVNBPZW4OZ3SVUZ5KDOLTFVAAVJC6V7TEMHQ">
+      <manifest-digest sha256new="JD4R37MXY65U62QOQVNBPZW4OZ3SVUZ5KDOLTFVAAVJC6V7TEMHQ"/>
+      <archive href="0install-dotnet-2.25.3.tar.gz" size="13719343" type="application/x-compressed-tar"/>
+    </implementation>
   </group>
 </interface>