chore(deps): update sse-starlette requirement from >=2.0.0 to >=3.4.6

[dependabot]

Updates the requirements on sse-starlette to permit the latest version.

Release notes

Sourced from sse-starlette's releases.

v3.4.6

What's Changed

• chore(deps): bump daphne from 4.2.1 to 4.2.2 by @​dependabot[bot] in sysid/sse-starlette#201
• chore(deps): bump actions/checkout from 6 to 7 by @​dependabot[bot] in sysid/sse-starlette#200
• make ping tests independent of wall-clock timing by @​mahenzon in sysid/sse-starlette#202

New Contributors

• @​mahenzon made their first contribution in sysid/sse-starlette#202

Full Changelog: sysid/sse-starlette@v3.4.5...v3.4.6

Commits

• c956ba3 Bump version to 3.4.6
• 2dd7924 Merge pull request #202 from mahenzon/fix/deterministic-ping-tests
• 6ffcd0d update test_sse: make ping tests independent of wall-clock timing
• d630709 Merge pull request #200 from sysid/dependabot/github_actions/actions/checkout-7
• 91e4bb3 Merge pull request #201 from sysid/dependabot/uv/daphne-4.2.2
• 8c68e01 chore(deps): bump daphne from 4.2.1 to 4.2.2
• d160387 chore(deps): bump actions/checkout from 6 to 7
• d45e482 Bump version to 3.4.5
• 32fbde5 Merge pull request #195 from sysid/dependabot/uv/starlette-1.3.1
• eba4008 Merge pull request #199 from sysid/fix/test-selection
• Additional commits viewable in compare view

Note
Automatic rebases have been disabled on this pull request as it has been open for over 30 days.

[dependabot]

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[github-actions]

This pull request has been marked stale due to 30 days of inactivity. It will be closed in 14 days unless there is new activity.

[github-actions]

Closing due to prolonged inactivity. Reopen or open a fresh PR if you want to continue this work.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.