Fix #87 - actually disable buffering when RequireParallelAccess is set #130

Job	Run time
Build extension binaries / Generate matrix	27s
Build extension binaries / MacOS (osx_amd64, x86_64, x64-osx)	2m 28s
Build extension binaries / DuckDB-Wasm	0s
Build extension binaries / Linux (linux_amd64, ubuntu:18.04, x64-linux)	9m 21s
Build extension binaries / MacOS (osx_arm64, arm64, arm64-osx)	1m 50s
Build extension binaries / Windows (windows_amd64, x64-windows-static-md)	21m 32s
Build extension binaries / Linux (linux_amd64_gcc4, quay.io/pypa/manylinux2014_x86_64, x64-linux)	8m 30s
Build extension binaries / Linux (linux_arm64, ubuntu:18.04, arm64-linux)	9m 52s
Deploy extension binaries / Generate matrix	23s
Deploy extension binaries / Deploy (linux_amd64)	31s
Deploy extension binaries / Deploy (linux_amd64_gcc4)	34s
Deploy extension binaries / Deploy (linux_arm64)	35s
Deploy extension binaries / Deploy (osx_amd64)	28s
Deploy extension binaries / Deploy (osx_arm64)	30s
Deploy extension binaries / Deploy (windows_amd64)	35s
	57m 36s

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