Fix `SOURCE_DATE_EPOCH` in `Makefile.win` (#14922) #12151

Job	Run time
x86_64-musl-test	35m 10s
x86_64-gnu-test (1.7.3)	32m 58s
x86_64-gnu-test (1.8.2)	32m 54s
x86_64-gnu-test (1.9.2)	33m 1s
x86_64-gnu-test (1.10.1)	32m 44s
x86_64-gnu-test (1.11.2)	33m 35s
x86_64-gnu-test (1.12.2)	33m 29s
check_format	1m 34s
x86_64-gnu-test (1.13.2)	33m 6s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	33m 18s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	34m 9s
deploy_api_docs	1m 56s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	36m 3s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	34m 22s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	34m 7s
x86_64-gnu-test-preview_mt	5m 38s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	34m 33s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	32m 55s
	8h 35m 32s

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