Update slackapi/slack-github-action action to v3.0.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
slackapi/slack-github-action	action	patch	v3.0.2 → v3.0.3

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Release Notes

slackapi/slack-github-action (slackapi/slack-github-action)

v3.0.3

Compare Source

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Configuration

📅 Schedule: (in timezone UTC)

• Branch creation
  • "before 9am on Monday"
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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