comment out Windows Debug build since it fails #971

Job	Run time
Linux.1: Release / ci_steps	14m 0s
Linux.4: threads=OFF / ci_steps	13m 27s
Linux.3: static / ci_steps	14m 17s
Linux.2: Debug / ci_steps	24m 13s
Linux.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal deflate / ci_steps	4m 13s
Linux.6: custom namespace / ci_steps	14m 26s
Linux.7: vfx2023 / ci_steps	13m 49s
Linux.8: vfx2022 / ci_steps	13m 13s
Linux.9: vfx2021 / ci_steps	13m 34s
macOS.1: Release / ci_steps	8m 5s
macOS.2: Debug / ci_steps	19m 21s
macOS.3: static / ci_steps	9m 21s
macOS.4: threads=OFF / ci_steps	7m 4s
macOS.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal imath+deflate / ci_steps	1m 6s
macOS.6: macos-13 / ci_steps	18m 35s
Windows.1: Release / ci_steps	13m 29s
Windows.3: static / ci_steps	13m 9s
Windows.4: threads=OFF / ci_steps	13m 22s
Windows.5: pkgconfig=OFF, examples=OFF, tools=OFF, docs=OFF, internal imath+deflate / ci_steps	2m 20s
Windows.6: vfx2022 / ci_steps	13m 15s
	4h 4m 19s

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