Use maturin v1.7.7-beta.1 for Windows build #170

Job	Run time
musllinux (x86_64-unknown-linux-musl)	1m 0s
linux (x86_64)	1m 15s
linux-cross (aarch64)	2m 0s
musllinux (i686-unknown-linux-musl)	54s
macos	1m 15s
linux (i686)	1m 31s
linux-cross (armv7)	2m 32s
linux-cross (s390x)	1m 58s
linux-cross (ppc64le)	1m 59s
musllinux-cross (aarch64-unknown-linux-musl, aarch64)	1m 36s
windows (x64)	1m 43s
linux-cross (ppc64)	1m 57s
musllinux-cross (armv7-unknown-linux-musleabihf, armv7)	1m 32s
windows (x86)	1m 48s
Release	0s
	23m 0s

Provide feedback