Switch to using `eos-system-contracts` in libtester tests #3426

Job	Run time
Discover Versions	1s
Platform Cache / Discover Platforms	2s
Platform Cache / Build Platforms (none)	1s
Run Build Workflow / Build spring (reproducible)	8m 33s
Run Build Workflow / Build spring (asan)	10m 47s
Run Build Workflow / Build spring (ubuntu20)	7m 47s
Run Build Workflow / Build spring (ubsan)	9m 9s
Run Build Workflow / Build spring (asserton)	7m 47s
Run Build Workflow / Build spring (ubuntu22)	7m 35s
Tests (ubuntu20)	3m 30s
NP Tests (ubuntu20)	6m 28s
Tests (ubuntu22)	3m 16s
Build deb packages (ubuntu20)	10m 52s
NP Tests (ubuntu22)	6m 36s
LR Tests (ubuntu20)	24m 13s
Tests (asserton)	3m 22s
Build deb packages (ubuntu22)	11m 48s
NP Tests (asserton)	6m 25s
LR Tests (ubuntu22)	24m 18s
Tests (ubsan)	4m 59s
Build deb packages (reproducible)	9m 24s
NP Tests (ubsan)	9m 11s
LR Tests (asserton)	24m 13s
Tests (asan)	5m 36s
NP Tests (ubuntu20repro)	6m 33s
LR Tests (ubsan)	25m 36s
Tests (ubuntu20repro)	3m 19s
NP Tests (ubuntu22repro)	6m 35s
LR Tests (ubuntu20repro)	24m 18s
Tests (ubuntu22repro)	3m 14s
LR Tests (ubuntu22repro)	24m 24s
libtester tests (ubuntu22, build-tree)	5m 48s
libtester tests (ubuntu22, make-dev-install)	5m 49s
libtester tests (ubuntu22, deb-install)	1m 21s
All Required Tests Passed	1s
	5h 12m 51s

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