Bump Npgsql from 6.0.7 to 8.0.3 in /Ayano.Core

Bumps [Npgsql](https://github.com/npgsql/npgsql) from 6.0.7 to 8.0.3.
- [Release notes](https://github.com/npgsql/npgsql/releases)
- [Commits](npgsql/npgsql@v6.0.7...v8.0.3)

---
updated-dependencies:
- dependency-name: Npgsql
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Ayano.Core/Ayano.Core.csproj

@@ -18,7 +18,7 @@
       <PackageReference Include="Serilog" Version="2.12.0" />
       <PackageReference Include="VTP.RemoraHelpSystem" Version="1.1.2" />
       <PackageReference Include="IronPython" Version="3.4.0-beta1" />
-      <PackageReference Include="Npgsql" Version="6.0.7" />
+      <PackageReference Include="Npgsql" Version="8.0.3" />
     </ItemGroup>
 
     <ItemGroup>