deps: update image requirement from 0.24.6 to 0.25.2 #595

Job	Run time
rustfmt	16s
documentation	1m 14s
benchmarks	1m 40s
test (msrv, ubuntu-20.04, 1.77.0)	1m 13s
clippy	54s
test (stable, ubuntu-20.04, stable)	1m 3s
test (beta, ubuntu-20.04, beta)	1m 7s
test (nightly, ubuntu-20.04, nightly)	1m 7s
Miri	2m 23s
test (macos, macos-latest, stable)	58s
Optional features (approx selected)	33s
test (win-msvc, windows-2019, stable)	3m 30s
test (win-gnu, windows-2019, stable)	1m 49s
Optional features (none selected)	30s
static SuiteSparse (stable, ubuntu-20.04, stable)	38s
static SuiteSparse (macos, macos-latest, stable)	44s
static SuiteSparse (win-msvc, windows-2019, stable)	1m 20s
static SuiteSparse (win-gnu, windows-2019, stable)	1m 22s
	22m 21s

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