Bump openwhisk from 3.21.7 to 3.21.8 (#152)

Bumps [openwhisk](https://github.com/apache/openwhisk-client-js) from 3.21.7 to 3.21.8.
- [Release notes](https://github.com/apache/openwhisk-client-js/releases)
- [Changelog](https://github.com/apache/openwhisk-client-js/blob/master/CHANGELOG.md)
- [Commits](apache/openwhisk-client-js@3.21.7...3.21.8)

---
updated-dependencies:
- dependency-name: openwhisk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

package.json

@@ -46,7 +46,7 @@
     "js-yaml": "^4.1.0",
     "lru-cache": "^6.0.0",
     "node-fetch": "^2.6.0",
-    "openwhisk": "^3.21.7",
+    "openwhisk": "^3.21.8",
     "uuid": "^8.3.1",
     "xml-js": "^1.6.11"
   }