mingw: use strftime() directly in UCRT builds #27202

Job	Run time
config	6s
fuzz smoke test	1m 8s
win+Meson build	5m 15s
static-analysis	5m 35s
documentation	7m 10s
sparse	3m 40s
win+VS build	-1s
osx-clang (macos-14)	21m 13s
win build	5m 43s
rust-analysis	1m 46s
osx-reftable (macos-14)	25m 38s
osx-gcc (macos-14)	19m 39s
linux-breaking-changes (ubuntu:rolling)	12m 25s
linux-musl-meson (alpine:latest)	7m 55s
linux-TEST-vars (ubuntu:20.04)	12m 50s
almalinux-8 (almalinux:8)	10m 9s
fedora-breaking-changes-meson (fedora:latest)	9m 23s
osx-meson (macos-14)	24m 30s
linux-reftable (ubuntu:rolling)	13m 17s
linux-asan-ubsan (ubuntu:rolling)	34m 47s
debian-11 (debian:11)	10m 12s
linux-sha256 (ubuntu:rolling)	13m 18s
linux32 (i386/ubuntu:focal)	8m 31s
linux-reftable-leaks (ubuntu:rolling)	25m 34s
linux-meson (ubuntu:rolling)	13m 30s
win+VS test	0s
linux-leaks (ubuntu:rolling)	27m 19s
win+Meson test (4)	7m 1s
win+Meson test (0)	9m 37s
win+Meson test (1)	11m 46s
win+Meson test (6)	12m 30s
win+Meson test (5)	6m 52s
win+Meson test (8)	7m 51s
win+Meson test (2)	10m 26s
win+Meson test (7)	8m 5s
win+Meson test (9)	7m 47s
win+Meson test (3)	5m 54s
win test (2)	8m 56s
win test (9)	10m 2s
win test (3)	7m 56s
win test (6)	7m 10s
win test (8)	8m 3s
win test (0)	6m 52s
win test (5)	8m 0s
win test (1)	9m 47s
win test (4)	10m 39s
win test (7)	5m 15s
	8h 11m 1s

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