Chore: Upgrade Cortex

[aknuds1]

What this PR does:
Upgrade to latest Cortex.

Changes from Cortex v1.9.0 until a4bf10354786.

Which issue(s) this PR fixes:

Checklist

• Tests updated
• NA Documentation added
• CHANGELOG.md updated - the order of entries should be [CHANGE], [FEATURE], [ENHANCEMENT], [BUGFIX]

[CLAassistant]

All committers have signed the CLA.

[annanay25]

Thanks for the update @aknuds1

Could you link the changelog between the old and new commit please? We would have to comb through it and look for any changes that might affect us.

[aknuds1]

Thanks for the update @aknuds1

Could you link the changelog between the old and new commit please? We would have to comb through it and look for any changes that might affect us.

@annanay25 OK, will do.

[aknuds1]

@annanay25 added change comparison link between the two Cortex commits. Hope it's what you need.

[kvrhdn]

The CHANGELOG is probably easier to parse.

[aknuds1]

The CHANGELOG is probably easier to parse.

Thanks @kvrhdn

[kvrhdn]

I don't see a lot of changes impacting Tempo, looks good to me 👍
Glad this upgrade went smoother than my upgrade a couple of weeks ago 😅

[annanay25]

Relevant changes:

• Change in memberlist default values, might need changes to our jsonnet: Expose default configuration values for memberlist. cortexproject/cortex#4276
• Compression of memberlist messages, ON by default, and no action needed: Expose configuration of memberlist packet compression. cortexproject/cortex#4346

Also, do we need to backport this change - cortexproject/cortex#4375

[annanay25]

lgtm.

[annanay25]

Can you please add a CHANGELOG entry. This is looking good to go.

[aknuds1]

Can you please add a CHANGELOG entry. This is looking good to go.

Thanks @annanay25, done.