docs(changelog): prepare for v1.2.0 #66

Job	Run time
release / build-with-share / x86_64-linux	5m 13s
release / build (x86_64-darwin, macos-15-intel) / x86_64-darwin	14m 21s
release / build (armv7l-linux, ubuntu-24.04) / armv7l-linux	4m 59s
release / build (x86_64-windows, ubuntu-24.04) / x86_64-windows	5m 13s
release / build (aarch64-darwin, macos-15) / aarch64-darwin	9m 7s
release / build (i686-linux, ubuntu-24.04) / i686-linux	5m 41s
release / build (armv6l-linux, ubuntu-24.04) / armv6l-linux	5m 14s
release / build (aarch64-linux, ubuntu-24.04) / aarch64-linux	5m 17s
	55m 5s

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