Fluent Bit 4.2.7

https://fluentbit.io/announcements/v4.2.7/

What's Changed

• release: update to 4.2.7 by @github-actions[bot] in #12005
• releasse: Update version to v4.2.7 [4.2 branch] by @cosmo0920 in #12015
• github: workflows: Use semver and timestamp suffixes to distinguish branches [Backport to 4.2] by @cosmo0920 in #12017
• lib: librdkafka: Upgrade to v2.15.0 [Backport to 4.2] by @cosmo0920 in #12050
• in_forward: validate PING is a msgpack array in check_ping [Backport to 4.2] by @cosmo0920 in #12051
• out_forward: align secure forward handshake and chunk ack with protocol spec [Backport to 4.2] by @cosmo0920 in #12052
• gzip: read magic number endian-safely in streaming decompressor [Backport to 4.2] by @cosmo0920 in #12056
• in_forward: fix 100% CPU hang and connection teardown use-after-free [Backport to 4.2] by @cosmo0920 in #12053
• in_splunk: return Splunk HEC auth status codes [Backport to 4.2] by @cosmo0920 in #12071

Full Changelog: v4.2.6...v4.2.7