nuget groups

.github/renovate.json5

@@ -13,10 +13,42 @@
       "matchManagers": ["github-actions"],
       "matchUpdateTypes": ["minor", "patch"]
     },
+    // nuget groups
+    {
+      groupName: "Entity Framework Core",
+      matchPackageNames: ["/\\.EntityFrameworkCore\\./", "/^dotnet-ef/"],
+      matchUpdateTypes: ["minor", "patch"]
+    },
+    {
+      groupName: "Testing",
+      matchPackageNames: [
+        "coverlet.collector",
+        "Microsoft.NET.Test.Sdk",
+        "NSubstitute",
+        "xunit",
+        "xunit.runner.visualstudio"
+      ],
+      matchUpdateTypes: ["minor", "patch"]
+    },
+    {
+      groupName: "Serilog",
+      matchPackageNames: ["/^Serilog\\./"],
+      matchUpdateTypes: ["minor", "patch"]
+    },
     {
       "groupName": "nuget minor",
       "matchManagers": ["nuget"],
       "matchUpdateTypes": ["minor", "patch"]
+    },
+    // Ignore major updates that require newer .NET SDK versions
+    {
+      matchPackageNames: [
+        "/\\.EntityFrameworkCore\\./",
+        "/^dotnet-ef/",
+        "/^Serilog\\./"
+      ],
+      matchUpdateTypes: ["major"],
+      enabled: false
     }
   ],
   "ignoreDeps": ["dotnet-sdk"]