chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v1 -> v6

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Release Notes

actions/checkout (actions/checkout)

v6

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v5

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v4

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• url-helper.ts now leverages well-known environment variables by @​jww3 in #​1941
• Expand unit test coverage for isGhes by @​jww3 in #​1946

v3

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• Fix: Mark test scripts with Bash'isms to be run via Bash
• Add option to fetch tags even if fetch-depth > 0

v2

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• Fix default branch resolution for .wiki and when using SSH

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1. .github/workflows/build.yml:16

• Draft comment:
  Updated checkout action to v6. Verify that v6's defaults (e.g., fetch-depth, submodules) meet your workflow requirements. Consider pinning to a commit SHA for enhanced security.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

2. .github/workflows/linters.yml:10

• Draft comment:
  Checkout action updated to v6. Ensure that its default behavior is compatible with your linter job needs.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

3. .github/workflows/release.yml:13

• Draft comment:
  Using actions/checkout@v6 here. Confirm that any changes in v6 (e.g., default settings) do not impact your release job.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

4. .github/workflows/release.yml:27

• Draft comment:
  Checkout action updated to v6 in the goreleaser job. Check for any behavioral differences compared to v1.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

5. .github/workflows/test.yml:17

• Draft comment:
  Updated actions/checkout to v6 for the Go module directory. Verify that v6 aligns with the workflow’s expectations.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

6. .github/workflows/test.yml:34

• Draft comment:
  Checkout action updated to v6 for the Docker build step. Confirm that no additional settings are needed with v6.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

Workflow ID: wflow_tUjTptoufN8vN6Su

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