Use LRU in connection-cache (backport #24109)

[mergify]

This is an automatic backport of pull request #24109 done by Mergify.
Cherry-pick of a38bd4a has failed:

On branch mergify/bp/v1.10/pr-24109
Your branch is up to date with 'origin/v1.10'.

You are currently cherry-picking commit a38bd4acc.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   Cargo.lock
	modified:   client/Cargo.toml
	modified:   client/src/connection_cache.rs
	modified:   programs/bpf/Cargo.lock

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   gossip/src/cluster_info_metrics.rs

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/github/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

---

Mergify commands and options

More conditions and actions can be found in the documentation.

You can also trigger Mergify actions by commenting on this pull request:

• @Mergifyio refresh will re-evaluate the rules
• @Mergifyio rebase will rebase this PR on its base branch
• @Mergifyio update will merge the base branch into this PR
• @Mergifyio backport <destination> will backport this PR on <destination> branch

Additionally, on Mergify dashboard you can:

• look at your merge queues
• generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.com

[solana-grimes]

😱 New commits were pushed while the automerge label was present.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (v1.10@9aa9587). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff            @@
##             v1.10   #24322   +/-   ##
========================================
  Coverage         ?    81.5%           
========================================
  Files            ?      584           
  Lines            ?   158945           
  Branches         ?        0           
========================================
  Hits             ?   129636           
  Misses           ?    29309           
  Partials         ?        0