chore: update http-proxy-middleware

[aaronbatey]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

N/A, since this is a dependency upgrade

Motivation / Use-Case

There is a security vulnerability in this package and this PR addresses it.

Versions of the package http-proxy-middleware before 2.0.7, from 3.0.0 and before 3.0.3 are vulnerable to Denial of Service (DoS) due to an UnhandledPromiseRejection error thrown by micromatch. An attacker could kill the Node.js process and crash the server by making requests to certain paths.

Breaking Changes

There shouldn't be any, this is a minor dependency upgrade.

[linux-foundation-easycla]

• ✅login: aaronbatey / (6c5f6c7)

The committers listed above are authorized under a signed CLA.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.12%. Comparing base (af6bd68) to head (6c5f6c7).
Report is 95 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (af6bd68) and HEAD (6c5f6c7). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (af6bd68)	HEAD (6c5f6c7)
	36	35

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5346      +/-   ##
==========================================
- Coverage   90.29%   85.12%   -5.18%     
==========================================
  Files          15       16       +1     
  Lines        1577     1741     +164     
  Branches      601      651      +50     
==========================================
+ Hits         1424     1482      +58     
- Misses        140      233      +93     
- Partials       13       26      +13     

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