mingw: use strftime() directly in UCRT builds (#6130) #6490

Job	Run time
config	9s
fuzz smoke test	1m 12s
static-analysis	5m 40s
win+VS build (arm64)	3m 12s
win+VS build (x64)	3m 17s
osx-meson (macos-14)	24m 10s
osx-gcc (macos-14)	19m 56s
osx-reftable (macos-14)	20m 48s
osx-clang (macos-14)	15m 7s
rust-analysis	1m 29s
sparse	3m 24s
win+Meson build	3m 59s
win build	5m 22s
documentation	7m 22s
linux-breaking-changes (ubuntu:rolling)	12m 38s
linux-leaks (ubuntu:rolling)	27m 16s
linux32 (i386/ubuntu:focal)	10m 6s
almalinux-8 (almalinux:8)	10m 30s
linux-musl-meson (alpine:latest)	8m 1s
linux-reftable (ubuntu:rolling)	13m 3s
linux-sha256 (ubuntu:rolling)	11m 3s
debian-11 (debian:11)	10m 14s
linux-asan-ubsan (ubuntu:rolling)	34m 24s
linux-TEST-vars (ubuntu:20.04)	12m 48s
linux-reftable-leaks (ubuntu:rolling)	29m 9s
fedora-breaking-changes-meson (fedora:latest)	11m 17s
linux-meson (ubuntu:rolling)	13m 21s
win+VS test	0s
win+Meson test (2)	8m 11s
win+Meson test (1)	9m 32s
win+Meson test (8)	10m 15s
win+Meson test (5)	7m 43s
win+Meson test (9)	10m 7s
win+Meson test (3)	8m 13s
win+Meson test (6)	13m 22s
win+Meson test (4)	8m 53s
win+Meson test (7)	7m 49s
win+Meson test (0)	7m 28s
win test (4)	10m 1s
win test (8)	9m 4s
win test (9)	6m 18s
win test (5)	11m 17s
win test (0)	7m 39s
win test (3)	11m 58s
win test (6)	6m 13s
win test (7)	4m 54s
win test (1)	8m 34s
win test (2)	7m 9s
	8h 13m 37s

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