fix: packageRule match anything only if there is a negating config

lib/workers/dep-type/index.js

@@ -57,7 +57,11 @@ function getDepConfig(depTypeConfig, dep) {
     );
     depConfig.packageRules.forEach(packageRule => {
       let applyRule = false;
-      if (!(packageRule.packageNames || packageRule.packagePatterns)) {
+      if (
+        (packageRule.excludePackageNames ||
+          packageRule.excludePackagePatterns) &&
+        !(packageRule.packageNames || packageRule.packagePatterns)
+      ) {
         logger.debug(
           { packageRule, dependency },
           'packageRule is missing packageNames and packagePatterns so will match anything'