chore(deps-dev): bump @types/node from 12.6.6 to 12.6.8

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 12.6.6 to 12.6.8.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -54,7 +54,7 @@
     "@angular/language-service": "~8.1.1",
     "@types/jasmine": "~3.3.13",
     "@types/jasminewd2": "~2.0.3",
-    "@types/node": "~12.6.6",
+    "@types/node": "~12.6.8",
     "codelyzer": "~5.1.0",
     "cz-conventional-changelog": "^2.1.0",
     "jasmine-core": "~3.4.0",