Upgrade fdeflate and remove ZlibStream::in_buffer #386

Job	Run time
powerpc_cross	14s
feature_check	1m 4s
build (1.57.0, ubuntu-latest)	3m 40s
feature_check (benchmarks)	1m 4s
build (1.57.0, windows-latest)	5m 40s
rustfmt	8s
test_all	1m 26s
build (1.57.0, macos-latest)	5m 52s
build (stable, ubuntu-latest)	24s
build (stable, windows-latest)	1m 27s
build (stable, macos-latest)	26s
build (beta, ubuntu-latest)	14s
build (beta, windows-latest)	47s
build (beta, macos-latest)	33s
build (nightly, ubuntu-latest)	19s
build (nightly, windows-latest)	41s
build (nightly, macos-latest)	24s
	24m 23s

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