diff-highlight: fetch all config with one process #27000

Job	Run time
config	6s
fuzz smoke test	1m 29s
win build	5m 6s
win+Meson build	6m 8s
documentation	7m 22s
static-analysis	5m 42s
sparse	3m 26s
osx-gcc (macos-14)	16m 43s
osx-clang (macos-14)	17m 11s
osx-reftable (macos-14)	17m 32s
osx-meson (macos-14)	20m 13s
rust-analysis	1m 51s
linux-meson (ubuntu:rolling)	14m 33s
linux-reftable (ubuntu:rolling)	13m 55s
debian-11 (debian:11)	10m 46s
win+VS build	0s
linux-breaking-changes (ubuntu:rolling)	13m 23s
linux-musl-meson (alpine:latest)	8m 41s
linux-TEST-vars (ubuntu:20.04)	13m 48s
almalinux-8 (almalinux:8)	11m 8s
linux-reftable-leaks (ubuntu:rolling)	29m 57s
linux32 (i386/ubuntu:focal)	11m 20s
fedora-breaking-changes-meson (fedora:latest)	11m 14s
linux-leaks (ubuntu:rolling)	29m 22s
linux-sha256 (ubuntu:rolling)	14m 32s
linux-asan-ubsan (ubuntu:rolling)	36m 41s
win+VS test	0s
win test (6)	5m 50s
win test (8)	9m 5s
win test (4)	11m 2s
win test (7)	5m 25s
win test (5)	8m 21s
win test (0)	6m 14s
win test (9)	10m 3s
win test (1)	8m 25s
win test (2)	9m 8s
win test (3)	6m 9s
win+Meson test (7)	9m 10s
win+Meson test (0)	6m 24s
win+Meson test (6)	17m 25s
win+Meson test (5)	7m 22s
win+Meson test (8)	10m 33s
win+Meson test (1)	9m 16s
win+Meson test (3)	5m 37s
win+Meson test (9)	6m 49s
win+Meson test (4)	7m 21s
win+Meson test (2)	9m 51s
	8h 11m 39s

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