Replace set-output with recommended env output

[waybackarchiver]

Description

Replaces the soon-to-be deprecated set-output command.

Reference: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

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Issue Ticket Number

Fixes #(issue_number)

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Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

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Checklist

• I have followed the contributing guidelines of this project as mentioned in CONTRIBUTING.md
• I have checked to ensure there aren't other open Pull Requests for the same update/change?
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes needed to the documentation

[codecov]

Codecov Report

Base: 45.51% // Head: 45.51% // No change to project coverage 👍

Coverage data is based on head (70fca50) compared to base (48530cd).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #234   +/-   ##
=======================================
  Coverage   45.51%   45.51%           
=======================================
  Files          40       40           
  Lines        4998     4998           
=======================================
  Hits         2275     2275           
  Misses       2445     2445           
  Partials      278      278           

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