Bump through2 from 3.0.1 to 4.0.2 (#1986)

Bumps [through2](https://github.com/rvagg/through2) from 3.0.1 to 4.0.2.
- [Release notes](https://github.com/rvagg/through2/releases)
- [Commits](rvagg/through2@v3.0.1...v4.0.2)

---
updated-dependencies:
- dependency-name: through2
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

@@ -52,7 +52,7 @@
     "rimraf": "^3.0.2",
     "split2": "^4.1.0",
     "std-mocks": "^1.0.1",
-    "through2": "^3.0.1",
+    "through2": "^4.0.2",
     "winston-compat": "^0.1.5"
   },
   "main": "./lib/winston",