Bump http-proxy from 1.18.0 to 1.18.1 in /nflow-explorer (#406)

* Bump http-proxy from 1.18.0 to 1.18.1 in /nflow-explorer

Bumps [http-proxy](https://github.com/http-party/node-http-proxy) from 1.18.0 to 1.18.1.
- [Release notes](https://github.com/http-party/node-http-proxy/releases)
- [Changelog](https://github.com/http-party/node-http-proxy/blob/master/CHANGELOG.md)
- [Commits](http-party/node-http-proxy@1.18.0...1.18.1)

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

* update http-proxy

* update karma 5.2.2 and protractor 7.0.0

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Edvard Fonsell <edvard.fonsell@nitorcreations.com>

CHANGELOG.md

@@ -25,7 +25,8 @@
 - `nflow-explorer`
   - Dependency updates:
     - autoprefixer 9.7.6
-    - node-sass 4.14.0
+    - node-sass 4.14.1
+    - http-proxy 1.18.1
 
 ## 7.2.0 (2020-04-27)