Bump version to 0.9.3 #193

Job	Run time
macos-aarch64	4m 49s
linux (x86_64-unknown-linux-gnu)	5m 35s
macos-x86_64	7m 57s
linux (i686-unknown-linux-gnu)	8m 6s
linux-cross (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	7m 3s
linux-cross (armv7-unknown-linux-gnueabihf, armv7)	6m 5s
musllinux (x86_64-unknown-linux-musl)	6m 5s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	6m 44s
musllinux (i686-unknown-linux-musl)	5m 0s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	5m 29s
sdist	4m 53s
linux-cross (s390x-unknown-linux-gnu, s390x)	6m 30s
windows (x86_64-pc-windows-msvc, x64)	8m 3s
linux-cross (powerpc64le-unknown-linux-gnu, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	6m 17s
windows (i686-pc-windows-msvc, x86)	8m 5s
linux-cross (powerpc64-unknown-linux-gnu, ppc64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	6m 10s
windows (aarch64-pc-windows-msvc, x64)	8m 5s
linux-cross (arm-unknown-linux-musleabihf, arm)	5m 32s
	1h 56m 28s

Provide feedback