[Snyk] Security upgrade express from 4.19.2 to 4.21.0

[tailuge]

Snyk has created this PR to fix 4 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Asymmetric Resource Consumption (Amplification) SNYK-JS-BODYPARSER-7926860	696
	Cross-site Scripting SNYK-JS-EXPRESS-7926867	541
	Cross-site Scripting SNYK-JS-SEND-7926862	391
	Cross-site Scripting SNYK-JS-SERVESTATIC-7926865	391

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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Learn how to fix vulnerabilities with free interactive lessons:

🦉 Cross-site Scripting

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.89%. Comparing base (0528c7b) to head (2b4e537).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #44   +/-   ##
=======================================
  Coverage   97.89%   97.89%           
=======================================
  Files          10       10           
  Lines         237      237           
=======================================
  Hits          232      232           
  Misses          5        5           

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