[PM-8785] Group renovate nuget packages (#235)

* move renovate to json5

* nuget groups

* remove quotes from keys

.github/renovate.json

@@ -1,23 +0,0 @@
-{
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": ["github>bitwarden/renovate-config"],
-  "enabledManagers": ["dockerfile", "github-actions", "nuget"],
-  "packageRules": [
-    {
-      "groupName": "dockerfile minor",
-      "matchManagers": ["dockerfile"],
-      "matchUpdateTypes": ["minor", "patch"]
-    },
-    {
-      "groupName": "gh minor",
-      "matchManagers": ["github-actions"],
-      "matchUpdateTypes": ["minor", "patch"]
-    },
-    {
-      "groupName": "nuget minor",
-      "matchManagers": ["nuget"],
-      "matchUpdateTypes": ["minor", "patch"]
-    }
-  ],
-  "ignoreDeps": ["dotnet-sdk"]
-}

.github/renovate.json5

@@ -0,0 +1,55 @@
+{
+  $schema: "https://docs.renovatebot.com/renovate-schema.json",
+  extends: ["github>bitwarden/renovate-config"],
+  enabledManagers: ["dockerfile", "github-actions", "nuget"],
+  packageRules: [
+    {
+      groupName: "dockerfile minor",
+      matchManagers: ["dockerfile"],
+      matchUpdateTypes: ["minor", "patch"]
+    },
+    {
+      groupName: "gh minor",
+      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"]
+}