Bump version to `v0.4.5` #1277

Job	Run time
linux (x86_64-unknown-linux-gnu)	4m 55s
macos-aarch64	3m 33s
linux-cross (aarch64-unknown-linux-gnu, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	5m 20s
linux (i686-unknown-linux-gnu)	6m 48s
Push Docker image ghcr.io/astral-sh/ruff	9m 22s
linux-cross (armv7-unknown-linux-gnueabihf, armv7)	5m 13s
linux-cross (s390x-unknown-linux-gnu, s390x)	5m 20s
macos-x86_64	9m 13s
musllinux (x86_64-unknown-linux-musl)	5m 11s
linux-cross (powerpc64le-unknown-linux-gnu, ppc64le, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	5m 46s
musllinux-cross (aarch64-unknown-linux-musl, aarch64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	6m 8s
musllinux (i686-unknown-linux-musl)	4m 9s
linux-cross (powerpc64-unknown-linux-gnu, ppc64, -e JEMALLOC_SYS_WITH_LG_PAGE=16)	5m 14s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	5m 4s
sdist	4m 5s
Validate tag	0s
windows (x86_64-pc-windows-msvc, x64)	7m 56s
windows (i686-pc-windows-msvc, x86)	7m 27s
windows (aarch64-pc-windows-msvc, x64)	9m 11s
Upload to PyPI	1s
Tag release	1s
Publish to GitHub	1s
Update dependents	1s
	1h 49m 59s

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