Bump p-is-promise from 3.0.0 to 4.0.0 (#116)

Bumps [p-is-promise](https://github.com/sindresorhus/p-is-promise) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/sindresorhus/p-is-promise/releases)
- [Commits](sindresorhus/p-is-promise@v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: p-is-promise
  dependency-type: direct:production
  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>

package.json

@@ -179,7 +179,7 @@
     "onetime": "^6.0.0",
     "p-each-series": "^3.0.0",
     "p-filter": "^4.1.0",
-    "p-is-promise": "^3.0.0",
+    "p-is-promise": "^4.0.0",
     "p-limit": "^1.3.0",
     "p-locate": "^2.0.0",
     "p-map": "^7.0.3",