Bump SDK version to 0.26.0
Version bump for the v0.26.0 release (make bump VERSION=0.26.0: 11 version files, 8 lockfiles).
v0.26.0 carries #1015 (the Pings service, and finding a Ping's chat-line Campfire so a ping line resolves) and #1016 (UpdateBoost). It also carries #993 (card-move docs), the CVE bumps in #994 and #999, #997, #1009, and dependency updates.
Nothing in it breaks a consumer, so MIGRATING.md gets no v0.26.0 section.
Summary by cubic
Bumps the Basecamp SDK from 0.25.0 to 0.26.0 across all language SDKs (Go, Kotlin, TypeScript, Python, Ruby, Rust, Swift) and their lockfiles.
v0.26.0 carries the new Pings service with ping-line Campfire resolution (#1015), UpdateBoost (#1016), card-move docs (#993), CVE fixes (#994, #999), #997, #1009, and dependency updates. Nothing in it breaks a consumer, so MIGRATING.md gets no v0.26.0 section.