update request-light to 0.2.4

[JimSuplizio]

What does this PR do?

Version 0.2.1 of request-light has a dependency on a version of http-proxy-agent which contains a security vulnerability. request-light to 0.2.4 uses an updated version of http-proxy-agent in which this vulnerability has been fixed.

What issues does this PR fix or reference?

@W-5997778@

[codecov]

Codecov Report

Merging #1230 into develop will decrease coverage by 0.04%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #1230      +/-   ##
===========================================
- Coverage    71.01%   70.97%   -0.05%     
===========================================
  Files          196      196              
  Lines         7397     7397              
  Branches       781      781              
===========================================
- Hits          5253     5250       -3     
- Misses        1989     1990       +1     
- Partials       155      157       +2

Impacted Files	Coverage Δ
...edx-vscode-core/src/telemetry/telemetryReporter.ts	50.7% <0%> (-2.82%)	⬇️
...forcedx-vscode-core/src/channels/channelService.ts	83.33% <0%> (-2.39%)	⬇️

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[lcampos]

lgtm