Update fluentbit to 1.8.5

New IB image available (advance to newest "working" image, 1.8.3, 1.8.4, and 1.8.5 are available)

Make sure to pull in any upstream chart updates (if applicable).

Definition of done:

• Image version(s) updated in chart/values.yaml
• Chart version bumped (match upstream chart, reset to bb.0 if the upstream version changes)
• Changelog entry added, note the update to image, any additional updates
• Clean install tested and validated working (see things to test)
• Upgrade tested and validated working (install newest tagged release, upgrade to your branch, then run through things to test)
• Pipeline passing on package MR
• Package MR merged and new release tagged
• BB MR opened, pipeline passing
• BB MR merged (no checkbox, BB MR should auto-close this)

Things to test:

• Install BB with core enabled
• Validate all pods come up healthy
• Validate that logs are being passed to elastic/kibana (for the upgrade ensure logs come in post-upgrade in addition to the ones already there)