WIP: build-mingw-w64: Bump to the latest version as of May 17th #1171

Job	Run time
prepare	6s
linux	55s
msys2 (mingw64)	2m 46s
linux-asserts	1m 0s
msys2 (clang64)	3m 32s
macos	1m 6s
linux-cross-windows	0s
linux-cross-aarch64	0s
test-compiler-rt	0s
test-openmp	0s
test-ffmpeg	0s
test-libcxx	0s
test-toolchain	0s
test-toolchain-cmd	0s
linux-test-cross-build-ffmpeg	0s
upload-nightly	0s
	9m 25s

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