chore(renovate): group x/tools/* upgrade

Refs: https://codeberg.org/forgejo/forgejo/pulls?q=x%2Ftools&type=all

renovate.json

@@ -99,6 +99,15 @@
       "automerge": true,
       "groupName": "renovate"
     },
+    {
+      "description": "x/tools/* are used in the CI only and upgraded together",
+      "matchPackagePrefixes": [
+        "golang.org/x/tools"
+      ],
+      "matchUpdateTypes": ["minor", "patch", "digest"],
+      "automerge": true,
+      "groupName": "x/tools"
+    },
     {
       "description": "Split minor and patch updates",
       "matchDepNames": [
@@ -152,8 +161,6 @@
         "github.com/golangci/golangci-lint/cmd/golangci-lint",
         "github.com/go-testfixtures/testfixtures",
         "github.com/PuerkitoBio/goquery",
-        "golang.org/x/tools/cmd/deadcode",
-        "golang.org/x/tools/gopls",
         "happy-dom",
         "markdownlint-cli",
         "mvdan.cc/gofumpt",