chore: for .Net 8.0, and only for it, bump IBM.Data.Db2 to 8.0 (#788)

Author: Seddryck

DubUrl.Testing/DubUrl.Testing.csproj

@@ -7,7 +7,8 @@
     <PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.4" />
     <PackageReference Include="NReco.PrestoAdo" Version="1.1.0" />
     <PackageReference Include="FirebirdSql.Data.FirebirdClient" Version="10.0.0" />
-    <PackageReference Include="Net.IBM.Data.Db2" Version="7.0.0.300" />
+    <PackageReference Include="Net.IBM.Data.Db2" Version="8.0.0.100" Condition="'$(TargetFramework)' == 'net8.0'"/>
+    <PackageReference Include="Net.IBM.Data.Db2" Version="7.0.0.300" Condition="'$(TargetFramework)' != 'net8.0'"/>
     <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="8.0.1" />
     <PackageReference Include="MySql.Data" Version="8.3.0" />
     <PackageReference Include="MySqlConnector" Version="2.3.4" />