[1.0.3] Fix flaky nodeos_snapshot_diff_test due to a race condition #2604

Job	Run time
Discover Versions	2s
Platform Cache / Discover Platforms	4s
Platform Cache / Build Platforms (none)	3s
Run Build Workflow / Build spring (reproducible)	7m 36s
Run Build Workflow / Build spring (ubuntu20)	9m 54s
Run Build Workflow / Build spring (ubuntu22)	9m 53s
Run Build Workflow / Build spring (asserton)	7m 36s
Run Build Workflow / Build spring (asan)	9m 48s
Run Build Workflow / Build spring (ubsan)	12m 17s
Build deb packages (ubuntu20)	10m 34s
Build deb packages (ubuntu22)	12m 10s
Tests (ubuntu20)	3m 20s
NP Tests (ubuntu20)	7m 14s
Build deb packages (reproducible)	9m 22s
Tests (ubuntu22)	3m 20s
LR Tests (ubuntu20)	24m 14s
NP Tests (ubuntu22)	6m 38s
Tests (asserton)	3m 31s
LR Tests (ubuntu22)	24m 19s
NP Tests (asserton)	6m 20s
Tests (ubsan)	4m 49s
NP Tests (ubsan)	8m 41s
LR Tests (asserton)	24m 4s
Tests (asan)	7m 51s
NP Tests (ubuntu20repro)	7m 6s
LR Tests (ubsan)	25m 17s
Tests (ubuntu20repro)	3m 24s
NP Tests (ubuntu22repro)	6m 28s
LR Tests (ubuntu20repro)	24m 23s
Tests (ubuntu22repro)	3m 17s
LR Tests (ubuntu22repro)	24m 7s
libtester tests (ubuntu22, build-tree)	10m 13s
libtester tests (ubuntu22, make-dev-install)	8m 41s
libtester tests (ubuntu22, deb-install)	4m 14s
All Required Tests Passed	1s
	5h 30m 51s

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