fix(term): headers on yet another MinGW version #121

Job	Run time
test (ubuntu-20.04, 5.1)	2m 34s
test (ubuntu-20.04, 5.2)	2m 33s
test (ubuntu-20.04, 5.3)	2m 34s
test (ubuntu-20.04, 5.4)	2m 37s
test (ubuntu-20.04, luajit)	2m 43s
test (ubuntu-20.04, luajit-openresty)	2m 47s
test (macos-13, 5.1)	3m 25s
test (macos-13, 5.2)	3m 19s
test (macos-13, 5.3)	3m 31s
test (macos-13, 5.4)	3m 20s
test (macos-13, luajit)	3m 7s
test (macos-13, luajit-openresty)	3m 15s
test (macos-latest, 5.4)	2m 57s
test (windows-latest, 5.1, msvc)	3m 11s
test (windows-latest, 5.2, msvc)	3m 18s
test (windows-latest, 5.3, msvc)	3m 25s
test (windows-latest, 5.4, msvc)	3m 25s
test (windows-latest, luajit, mingw)	3m 26s
	55m 27s

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