chore(master): release 8.3.0

[supabase-releaser]

🤖 I have created a release beep boop

8.3.0 (2026-10-02)

Features

• gotrue: add a captcha token to password sign-in (#457) (58ab7a4)
• gotrue: add a captcha token to sign-up options (#453) (86be817)
• gotrue: add sign-out scope to the stateless client (#447) (437f5a5)

Bug Fixes

• functions: return null from Invoke<T> for an empty body (#462) (ae23b98)
• functions: send the caller's content-type instead of dropping it (#451) (6690b0d)
• gotrue: sign out locally even if the server call fails (#448) (b7a046b)
• postgrest: throw a PostgrestException for a non-JSON 2xx body (#459) (5a815e6)
• realtime: skip unreadable json arrays instead of failing the record (#449) (16c0ab6)
• storage: close the local file after a resumable upload (#466) (510c23c)
• storage: use fresh headers on upload (#468) (7c72c13)
• storage: use per-request headers on uploads (#470) (aa15b97)

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