Update starlette requirement from <0.38.0,>=0.37.2 to >=0.37.2,<0.48.0 in /cookbook/python-a2a in the pip group across 1 directory

[dependabot]

Updates the requirements on starlette to permit the latest version.
Updates starlette to 0.47.3

Release notes

Sourced from starlette's releases.

Version 0.47.3

Fixed

• Use asyncio.iscoroutinefunction for Python 3.12 and older by @​mjpieters in encode/starlette#2984

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New Contributors

• @​mjpieters made their first contribution in encode/starlette#2984

Full Changelog: Kludex/starlette@0.47.2...0.47.3

Changelog

Sourced from starlette's changelog.

0.47.3 (August 24, 2025)

Fixed

• Use asyncio.iscoroutinefunction for Python 3.12 and older #2984.

0.47.2 (July 20, 2025)

Fixed

• Make UploadFile check for future rollover #2962.

0.47.1 (June 21, 2025)

Fixed

• Use Self in TestClient.__enter__ #2951.
• Allow async exception handlers to type-check #2949.

0.47.0 (May 29, 2025)

Added

• Add support for ASGI pathsend extension #2671.
• Add partitioned attribute to Response.set_cookie #2501.

Changed

• Change methods parameter type from list[str] to Collection[str] #2903.
• Replace import typing by from typing import ... in the whole codebase #2867.

Fixed

• Mark ExceptionMiddleware.http_exception as async to prevent thread creation #2922.

0.46.2 (April 13, 2025)

Fixed

• Prevents reraising of exception from BaseHttpMiddleware #2911.
• Use correct index on backwards compatible logic in TemplateResponse #2909.

0.46.1 (March 8, 2025)

Fixed

• Allow relative directory path when follow_symlinks=True #2896.

... (truncated)

Commits

• cb8f84f Version 0.47.3 (#2985)
• 3d7430a Use asyncio.iscoroutinefunction for Python 3.12 and older (#2984)
• 6ee94f2 Version 0.47.2 (#2965)
• 9f7ec2e Make UploadFile check for future rollover (#2962)
• 540ff5f Bump the python-packages group with 7 updates (#2957)
• d4dd545 docs: add Google Analytics (#2963)
• fa53554 Version 0.47.1 (#2952)
• e741635 Use Self in TestClient.__enter__ (#2951)
• 739ea49 Allow async exception handlers to type-check (#2949)
• 78da9b9 Bump the python-packages group with 6 updates (#2948)
• Additional commits viewable in compare view

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