Bump bootsnap from 1.18.4 to 1.18.6 in /graph-sample

[dependabot[bot]]

Bumps bootsnap from 1.18.4 to 1.18.6.

Changelog

Sourced from bootsnap's changelog.

Unreleased

• Fix cgroup CPU limits detection in CLI.

1.18.5

• Attempt to detect a QEMU bug that can cause bootsnap precompile to hang forever when building ARM64 docker images from x86_64 machines. See #495.
• Improve CLI to detect cgroup CPU limits and avoid spawning too many worker processes.

Commits

• 86efe7d Release 1.18.6
• dc98453 Fix cgroup CPU limits detection in CLI.
• 11dbc37 Release 1.18.5
• dcd9327 Merge pull request #501 from Shopify/improve-parallelism
• abe4ec3 Bump bundler cache on CI
• d603b70 Attempt to detect QEMU hangs
• 5e87800 cli: improve automatic parallelism to respect cgroup limits
• 0dc269d Merge pull request #499 from p8/docs/link-to-official-docs
• 5fb9098 Link to official Ruby documentation
• 252cf48 Add config/ dir to precompile example
• See full diff in compare view

You can trigger a rebase of this PR by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

Note Automatic rebases have been disabled on this pull request as it has been open for over 30 days.