Fix MinGW builds in CI #1794

Job	Run time
Test Big Endian	17m 34s
Bazel	6m 54s
macOS	31m 8s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: true)	10m 25s
ASAN	7m 34s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	10m 19s
Ubuntu 20.04 (Build: Debug, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	9m 46s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: false)	13m 3s
Ubuntu 20.04 (Build: Debug, Compilers: gcc-7/g++-7, Shared Library: false)	10m 17s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: true)	14m 8s
Ubuntu 20.04 (Build: Release, Compilers: clang-6.0/clang++-6.0, Shared Library: true)	14m 36s
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: false)	11m 57s
Windows Latest (Generator: MinGW Makefiles, Shared Library: false)	28m 39s
Windows Latest (Generator: MinGW Makefiles, Shared Library: true)	27m 46s
UBSAN	6m 43s
Ubuntu 20.04 (Build: Release, Compilers: gcc-7/g++-7, Shared Library: false)	14m 1s
Windows Latest (Generator: Visual Studio 17 2022, Shared Library: true)	11m 7s
	4h 5m 57s

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