release: bump version to 0.11.0

[mobileoverlord]

Version bump for the 0.11.0 release, carrying everything merged since 0.10.0:

• image_adaptor: stop serving a stale .raw after it is replaced #17 — image_adaptor: stop serving a stale .raw after it is replaced (plus the loop-attachment probe and clippy 1.98 fix)
• fix(staging): rename the active link into place instead of unlinking first #18 — staging: rename the active link into place instead of unlinking first
• refactor(config): make the configured state directories actually take effect #19 — config: make the configured state directories actually take effect
• fix(update): don't refresh extensions when the runtime is already current #20 — update: don't refresh extensions when the runtime is already current
• feat(verity): carry a dm-verity root hash, and refuse to ignore one #22 — verity: carry a dm-verity root hash and refuse to ignore one (phase 1; inert until avocado-cli emits root_hash, but manifest_version > 2 is now refused)

Cargo.toml + Cargo.lock only, matching the 0.10.0 bump (bcae20e). No dependency changes — the meta-avocado avocadoctl-crates.inc stays as is. Binary reports avocadoctl 0.11.0.

Held open for build testing before merge. Staged consumers: meta-avocado bumps to this branch on scarthgap and wrynose (draft until this lands and the SRCREV is repointed at main).