Update actions/checkout action to v7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v6 → v7

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Release Notes

actions/checkout (actions/checkout)

v7.0.1

Compare Source

• Skip running unsafe pr check if input is default by @​aiqiaoy in #​2518
• Trim only ascii whitespace for branch by @​aiqiaoy in #​2521
• Escape values passed to --unset by @​aiqiaoy in #​2530
• Various dependency updates

v7.0.0

Compare Source

• Block checking out fork PR for pull_request_target and workflow_run by @​aiqiaoy in #​2454
• Various dependency updates

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 55.43%. Comparing base (79cd571) to head (d00be18).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #917   +/-   ##
=======================================
  Coverage   55.43%   55.43%           
=======================================
  Files         103      103           
  Lines       11636    11636           
  Branches     1546     1546           
=======================================
  Hits         6450     6450           
  Misses       4837     4837           
  Partials      349      349           

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