(fix) update: Bump winston from 3.12.0 to 3.13.0 (#36)

Bumps [winston](https://github.com/winstonjs/winston) from 3.12.0 to 3.13.0.
- [Release notes](https://github.com/winstonjs/winston/releases)
- [Changelog](https://github.com/winstonjs/winston/blob/master/CHANGELOG.md)
- [Commits](winstonjs/winston@v3.12.0...v3.13.0)

---
updated-dependencies:
- dependency-name: winston
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -25,6 +25,6 @@
   "homepage": "https://github.com/peaksandpies/logger#readme",
   "dependencies": {
     "@google-cloud/logging-winston": "^6.0.0",
-    "winston": "^3.12.0"
+    "winston": "^3.13.0"
   }
 }