chore(deps): update pre-commit hook gitleaks/gitleaks to v8.21.0

This MR contains the following updates:

Package	Type	Update	Change
gitleaks/gitleaks	repository	minor	v8.20.1 -> v8.21.0

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

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Release Notes

gitleaks/gitleaks (gitleaks/gitleaks)

v8.21.0

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Changelog

• aabe381 Define multiple allowlists per rule (#​1496)
• 8ea6085 build: upgrade gitleaks/go-gitdiff to v0.9.1 (#​1559)
• be9d0f8 Fix rule extension (#​1556)
• 9988e52 Update base config allowlist (#​1555)
• 8fb39ba feat(azure): detect Azure AD client secrets (#​1199)
• 14c924d chore: match gitleaks.toml anywhere (#​1553)

respect @​rgmz @​9999years

⚠️ Note: you may find some findings that were previously ignored if using .gitleaksignore pop up in your scans. This is due to a fix for a long standing bug where gitleaks would incorrectly report merge commit SHAs instead of the actual commit where a secret was introduced. See the following issues for more context:

• https://github.com/gitleaks/gitleaks/issues/1333
• https://github.com/gitleaks/gitleaks/pull/1559
• https://github.com/gitleaks/gitleaks/issues/1570#issuecomment-2413947146

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