Bump arc-swap from 0.4.2 to 0.4.8

[dependabot]

Bumps arc-swap from 0.4.2 to 0.4.8.

Changelog

Sourced from arc-swap's changelog.

0.4.8

• Backport of fix to soundness issue in #45 (access::Map from Constant can lead to dangling references).

0.4.7

• Rename the unstable-weak to weak feature. The support is now available on 1.45 (currently in beta).

0.4.6

• Adjust to Weak::as_ptr from std (the weak pointer support, relying on unstable features).
• Support running on miri (without some optimizations), so dependencies may run miri tests.
• Little optimization when waiting out the contention on write operations.

0.4.5

• Added Guard::from_inner.

0.4.4

• Top-level docs rewrite (less rambling, hopefully more readable).

0.4.3

• Fix the Display implementation on Guard to correctly delegate to the underlying Display implementation.

Commits

• 34b809f Fix soundness hole around access::Map
• 77b5be7 Release 0.4.7
• 1cd19c3 Stabilized weak support
• ee8b86e Lint management
• 315f73b Version 0.4.6
• 005ec45 Merge branch 'miri'
• 8a93bb5 Update the weak ptr support for newer Rust
• 88fc681 Some trivial version updates
• e3f8538 Get rid of the model dependency
• 09cb648 Don't run pause/yield in the last iteration of wait_for_readers
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually 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 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)
• @dependabot use these labels will set the current labels as the default for future PRs for this repo and language
• @dependabot use these reviewers will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use these assignees will set the current assignees as the default for future PRs for this repo and language
• @dependabot use this milestone will set the current milestone as the default for future PRs for this repo and language

You can disable automated security fix PRs for this repo from the Security Alerts page.