Release 0.8.21 (#1513)

.changeset/sharp-plums-grab.md

.changeset/tough-rings-roll.md

apps/docs/CHANGELOG.md

apps/docs/package.json

apps/next/CHANGELOG.md

apps/next/package.json

e2e/examples/cloudflare-worker-agent/CHANGELOG.md

e2e/examples/cloudflare-worker-agent/package.json

e2e/examples/nextjs-agent/CHANGELOG.md

e2e/examples/nextjs-agent/package.json

e2e/examples/nextjs-edge-runtime/CHANGELOG.md

e2e/examples/nextjs-edge-runtime/package.json

e2e/examples/nextjs-node-runtime/CHANGELOG.md

e2e/examples/nextjs-node-runtime/package.json

e2e/examples/waku-query-engine/CHANGELOG.md

e2e/examples/waku-query-engine/package.json

packages/autotool/CHANGELOG.md

packages/autotool/examples/01_node/CHANGELOG.md

packages/autotool/examples/01_node/package.json

packages/autotool/examples/02_nextjs/CHANGELOG.md