Use single quotes in action job

[carmocca]

What does this PR do?

My bad, #10544 broke the cc-bot.

Seems like GitHub actions require single quotes. Tested on my fork.

Does your PR introduce any breaking changes? If yes, please list them.

None

Before submitting

• [n/a] Was this discussed/approved via a GitHub issue? (not for typos and docs)
• Did you read the contributor guideline, Pull Request section?
• Did you make sure your PR does only one thing, instead of bundling different changes together?
• Did you make sure to update the documentation with your changes? (if necessary)
• [n/a] Did you write any new necessary tests? (not for typos and docs)
• Did you verify new and existing tests pass locally with your changes?
• [n/a] Did you list all the breaking changes introduced by this pull request?
• [n/a] Did you update the CHANGELOG? (not for typos, docs, test updates, or internal minor changes/refactorings)

PR review

• Is this pull request ready for review? (if not, please submit in draft mode)
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cc @carmocca @akihironitta @Borda

[github-actions]

Build Error! No Linked Issue found. Please link an issue or mention it in the body using #<issue_id>

[akihironitta]

Thanks for the fix!

[codecov]

Codecov Report

Merging #10579 (1d2efa8) into master (247f5aa) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #10579   +/-   ##
=======================================
  Coverage      92%      92%           
=======================================
  Files         178      178           
  Lines       16249    16249           
=======================================
  Hits        14908    14908           
  Misses       1341     1341