chore: Upgrade actions/github-script to v7

[timogasda]

Description

Upgrade actions/github-script now that it's been released with NodeJS 20 support: actions/github-script#421.

Related links, issue #, if available: n/a

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (80bc30f) 94.40% compared to head (d0f3704) 94.40%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1732   +/-   ##
=======================================
  Coverage   94.40%   94.40%           
=======================================
  Files         652      652           
  Lines       17635    17635           
  Branches     5800     5800           
=======================================
  Hits        16648    16648           
  Misses        919      919           
  Partials       68       68           

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