Update gitleaks/gitleaks-action action to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
gitleaks/gitleaks-action	action	major	v2 → v3

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Release Notes

gitleaks/gitleaks-action (gitleaks/gitleaks-action)

v3.0.0

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What's changed

gitleaks-action v3 migrates the runtime from Node 20 to Node 24. No changes to inputs, outputs, or behavior. Update your workflow from gitleaks/gitleaks-action@v2 to gitleaks/gitleaks-action@v3.

Migration

# Before
- uses: gitleaks/gitleaks-action@v2

# After
- uses: gitleaks/gitleaks-action@v3

Why

GitHub is deprecating the Node 20 runtime for Actions:

• June 2, 2026: GitHub flips the runner default to Node 24. Workflows using gitleaks-action@v2 (Node 20) will still run, but only if ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION=true is set as an environment variable.
• September 16, 2026: Node 20 is removed from GitHub-hosted runners entirely. gitleaks-action@v2 stops working regardless of any opt-out flag.

Changes

• action.yml: runtime node20 → node24
• @actions/core: 1.10.0 → 1.11.1
• dist/ rebuilt
• Example workflows updated to actions/checkout@v6 and gitleaks-action@v3
• README updated with v3 migration guide

Self-hosted runners

If you use self-hosted runners, ensure your runner version is >= v2.327.1 (required for Node 24 support).

v3

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