CI: Fix diff checks for testing chores steps #11853

Job	Run time
Testing chores	2m 19s
Acceptance test node versions	4s
Build artifacts	1m 20s
Big-endian debian w/ Node.js latest (${{ matrix.shard }})	0s
windows-latest w/ Node.js 18.x (1/3)	6m 12s
ubuntu-latest w/ Node.js 24.x (1/2)	6m 1s
ubuntu-latest w/ Node.js 22.x (1/2)	5m 59s
windows-latest w/ Node.js 18.x (2/3)	9m 34s
ubuntu-latest w/ Node.js 18.x (1/2)	6m 28s
ubuntu-latest w/ Node.js 24.x (2/2)	5m 7s
ubuntu-latest w/ Node.js 20.x (2/2)	5m 25s
ubuntu-latest w/ Node.js 20.x (1/2)	5m 58s
ubuntu-latest w/ Node.js 18.x (2/2)	5m 42s
ubuntu-latest w/ Node.js 26.x (1/2)	5m 55s
windows-latest w/ Node.js 22.x (2/3)	8m 35s
macos-latest w/ Node.js 18.x (2/3)	5m 30s
windows-latest w/ Node.js 22.x (3/3)	6m 8s
macos-latest w/ Node.js 22.x (3/3)	3m 33s
ubuntu-latest w/ Node.js 22.x (2/2)	5m 27s
macos-latest w/ Node.js 22.x (1/3)	3m 35s
macos-latest w/ Node.js 22.x (2/3)	5m 51s
ubuntu-latest w/ Node.js 26.x (2/2)	6m 1s
macos-latest w/ Node.js 18.x (1/3)	4m 23s
windows-latest w/ Node.js 18.x (3/3)	5m 26s
macos-latest w/ Node.js 18.x (3/3)	5m 4s
windows-latest w/ Node.js 22.x (1/3)	5m 23s
	2h 11m 0s

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