Bump through2 from 2.0.3 to 3.0.1

Bumps [through2](https://github.com/rvagg/through2) from 2.0.3 to 3.0.1.
- [Release notes](https://github.com/rvagg/through2/releases)
- [Commits](rvagg/through2@v2.0.3...v3.0.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -52,7 +52,7 @@
     "readable-stream": "2.3.6",
     "split": "1.0.1",
     "stream-splicer": "2.0.0",
-    "through2": "2.0.3"
+    "through2": "3.0.1"
   },
   "devDependencies": {
     "concat-stream": "latest",