Bump libdwarf in OptionVariables #1527

Job	Run time
test-linux-add_subdirectory (On)	38s
test-linux-fetchcontent (On)	34s
test-linux-fetchcontent (Off)	36s
test-linux-findpackage (On)	24s
test-linux-findpackage (Off)	32s
test-linux-add_subdirectory (Off)	39s
test-macos-add_subdirectory (On)	33s
test-macos-add_subdirectory (Off)	38s
test-macos-fetchcontent (On)	34s
test-macos-findpackage (On)	24s
test-macos-fetchcontent (Off)	48s
test-mingw-add_subdirectory (On)	2m 14s
test-macos-findpackage (Off)	26s
test-mingw-fetchcontent (On)	2m 14s
test-mingw-add_subdirectory (Off)	2m 4s
test-mingw-fetchcontent (Off)	2m 24s
test-mingw-findpackage (On)	1m 31s
test-mingw-findpackage (Off)	1m 32s
test-windows-fetchcontent (On)	1m 35s
test-windows-add_subdirectory (On)	1m 25s
test-windows-fetchcontent (Off)	1m 43s
test-windows-findpackage (On)	1m 30s
test-windows-add_subdirectory (Off)	1m 27s
test-windows-findpackage (Off)	1m 36s
	28m 1s

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