Merge pull request github#14483 from github/mbg/go/dependabot

Go: Improve Dependabot configuration

Author: mbg

.github/dependabot.yml

@@ -22,5 +22,12 @@ updates:
     directory: "go/extractor"
     schedule:
       interval: "daily"
+    allow:
+      - dependency-name: "golang.org/x/mod"
+      - dependency-name: "golang.org/x/tools"
+    group:
+      extractor-dependencies:
+        patterns:
+          - "golang.org/x/*"
     reviewers:
       - "github/codeql-go"