chore(deps): update zricethezav/gitleaks docker tag to v8.21.4

This MR contains the following updates:

Package	Type	Update	Change
zricethezav/gitleaks	image-name	patch	v8.21.2 -> v8.21.4

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Release Notes

gitleaks/gitleaks (zricethezav/gitleaks)

v8.21.4

Compare Source

Changelog

• 906085f Update golang version to 1.23 (#​1672)
• d0ba52e bump go in dockerfile
• 8a83062 log bytes (#​1670)

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