Update dependency @sentry/ember to v8.21.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@sentry/ember (source)	8.20.0 -> 8.21.0

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Release Notes

getsentry/sentry-javascript (@​sentry/ember)

v8.21.0

Compare Source

Important Changes

• Alpha release of Official Cloudflare SDK
  • feat(cloudflare): Add withSentry method (#​13025)
  • feat(cloudflare): Add cloudflare sdk scaffolding (#​12953)
  • feat(cloudflare): Add basic cloudflare package and tests (#​12861)

This release contains the alpha version of @sentry/cloudflare, our SDK for the
Cloudflare Workers JavaScript Runtime! For details on how to use it,
please see the README. Any feedback/bug reports are greatly appreciated, please
reach out on GitHub.

Please note that only Cloudflare Workers are tested and supported - official Cloudflare Pages support will come in an
upcoming release.

Other Changes

• feat(feedback): Make cropped screenshot area draggable (#​13071)
• feat(core): Adapt spans for client-side fetch to streaming responses (#​12723)
• feat(core): Capture # of dropped spans through beforeSendTransaction (#​13022)
• feat(deps): bump @​opentelemetry/instrumentation-aws-sdk from 0.43.0 to 0.43.1 (#​13089)
• feat(deps): bump @​opentelemetry/instrumentation-express from 0.41.0 to 0.41.1 (#​13090)
• feat(nuxt): Add connected tracing meta tags (#​13098)
• feat(nuxt): Add vue-router instrumentation (#​13054)
• fix(feedback): Ensure pluggable feedback CDN bundle is correctly built (#​13081)
• fix(node): Improve OTEL validation logic (#​13079)

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