dev: improve dependabot configuration

Author: ldez

.github/dependabot.yml

@@ -7,8 +7,10 @@ updates:
       day: "sunday"
       time: "11:00" # 11am UTC
     ignore:
-      # ignore forked linters because of their versioning issues. TODO: fix it.
-      - dependency-name: "github.com/golangci/*"
+      # Ignore forked linters because of their versioning issues.
+      - dependency-name: "github.com/golangci/dupl"
+      - dependency-name: "github.com/golangci/gofmt"
+      - dependency-name: "github.com/golangci/unconvert"
   - package-ecosystem: github-actions
     directory: "/"
     schedule: