google-gax: v6.5.0

6.5.0 (2026-09-22)

Features

• Add o11y gRPC tracing (#9267) (ff39233)
• gax: Report response status codes on traced calls (#9344) (800322d)
• o11y: Let callers enable tracing with env var (#9377) (ed9d279)
• Pass through fallback parameter for HTTP calls (#9277) (653de60)

Bug Fixes

• gax: Detect aborts and timeouts by error name (6ce394b)
• gax: Enforce the call deadline on the REST transport (#9334) (ddafe50)
• gax: Map REST fallback transport errors to gRPC status codes (be36fd9)
• gax: Report transport failures as UNAVAILABLE, as gRPC does (db76247)