Bump ignore-walk from 3.0.4 to 4.0.1

Bumps [ignore-walk](https://github.com/isaacs/ignore-walk) from 3.0.4 to 4.0.1.
- [Release notes](https://github.com/isaacs/ignore-walk/releases)
- [Commits](npm/ignore-walk@v3.0.4...v4.0.1)

---
updated-dependencies:
- dependency-name: ignore-walk
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -32,7 +32,7 @@
   "homepage": "https://github.com/codecov/codecov-node",
   "dependencies": {
     "argv": "0.0.2",
-    "ignore-walk": "3.0.4",
+    "ignore-walk": "4.0.1",
     "js-yaml": "3.14.1",
     "teeny-request": "7.1.1",
     "urlgrey": "1.0.0"