Bump FXIOS-12796 [Swift 6] Update Glean package#29255

Cramsden wants to merge 3 commits intoepic-branch/swift-migrationmozilla-mobile/firefox-ios:epic-branch/swift-migrationfrom

cr/fxios-12796_upgrade-glean-for-sendable-conformancemozilla-mobile/firefox-ios:cr/fxios-12796_upgrade-glean-for-sendable-conformanceCopy head branch name to clipboard