Bump to v0.7.5 #1560

Job	Run time
test-linux-fetchcontent (On)	31s
test-linux-add_subdirectory (On)	27s
test-linux-fetchcontent (Off)	29s
test-linux-findpackage (On)	17s
test-linux-add_subdirectory (Off)	31s
test-linux-findpackage (Off)	18s
test-macos-add_subdirectory (On)	29s
test-macos-fetchcontent (On)	30s
test-macos-add_subdirectory (Off)	30s
test-macos-findpackage (On)	27s
test-macos-fetchcontent (Off)	32s
test-macos-findpackage (Off)	24s
test-mingw-add_subdirectory (On)	2m 10s
test-mingw-fetchcontent (On)	1m 42s
test-mingw-add_subdirectory (Off)	2m 10s
test-mingw-findpackage (On)	1m 0s
test-mingw-fetchcontent (Off)	1m 37s
test-windows-add_subdirectory (On)	48s
test-mingw-findpackage (Off)	1m 3s
test-windows-add_subdirectory (Off)	50s
test-windows-fetchcontent (On)	1m 26s
test-windows-findpackage (On)	1m 7s
test-windows-fetchcontent (Off)	48s
test-windows-findpackage (Off)	1m 22s
	21m 28s

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