Update dependency karma to v6.3.9

Author: renovate-config-app-private

package-lock.json

@@ -46,7 +46,7 @@
     "codelyzer": "6.0.2",
     "jasmine-core": "3.10.1",
     "jasmine-spec-reporter": "7.0.0",
-    "karma": "6.3.8",
+    "karma": "6.3.9",
     "karma-chrome-launcher": "3.1.0",
     "karma-cli": "2.0.0",
     "karma-coverage-istanbul-reporter": "3.0.3",